The time layer · standing up · 39 rival years
The Aquarium
Geography on the floor, time rising through the tank. 55 states, from Sind to Bengal, stop being lines on a chart and become solids you can walk around — and a date the sources cannot agree on stops being a footnote and becomes a length you can measure.
drag to turn · pinch or scroll to zoom
red rings are years other books give — click one
Nine solids
Nine columns in one frame is already a thicket, and the archive is going to keep growing. So the tank is scoped by region rather than thinned: show the Deccan, show Bengal, or hold both side by side to see how out of phase they are. Within a scope,Shapes at the ends of a column say how power arrived and left — a solid disc is a foundation, a broken ring a secession, a ring around a core a regency, a shallow cone an annexation, a driven spike a conquest. The Bahmani cap carries a fan of five: the states that left it. Those five broken rings sit at the bases of five other columns at the same height, which is a simultaneity no flat map shows. Then: click any column to pull it out of the crowd — the rest fall back to ghosts, its cloud thickens, and its rival-date rings brighten. Click any mark in the tank to read the event it stands for.
How to read the tank
The floor is the map, to scale: the same coordinates as the flat view and the same 93 places. Height is the year, 1300 at your feet and 1950 overhead. A state is therefore a column standing on its own capital — and on the day a capital moved, the column leans.
The leans are why it is worth turning. Golconda’s column is nearly plumb — eight kilometres of drift in a hundred and sixty-nine years, a dynasty that stayed put. Bengal’s kicks two hundred and ninety kilometres west in 1453, from Sonargaon to Gaur. The Nizams’ throws four hundred and thirty-one in forty years, Aurangabad to Hyderabad, and never settles again.
And the reason to build it at all: where the sources disagree about a year, the disagreement becomes a distance. The Barid Shahis of Bidar never held a coronation to date from, so five different published years mark their beginning — and here those five are rings you can count, spaced along the axis in proportion to how far apart the authorities actually are. On a flat map that is a footnote. Standing up, it has size, and you can see at a glance that the argument spans half a century.
What you are looking at
| State | Adopted span | Years | Rival dates published | Began by | Ended by |
|---|---|---|---|---|---|
| Bahmani Sultanate | 1347–1527 | 180 | 3 | foundation 1347 | fragmented into 5, from 1490 |
| Bijapur — the Adil Shahis | 1490–1686 | 196 | 1 | secession 1490 | conquest 1686 |
| Ahmadnagar — the Nizam Shahis | 1490–1636 | 146 | 2 | secession 1490 | annexation 1636 |
| Berar — the Imad Shahis | 1490–1574 | 84 | 1 | secession 1490 | annexation 1574 |
| Bidar — the Barid Shahis | 1492–1619 | 127 | 5 | regency 1492 | annexation 1619 |
| Golconda — the Qutb Shahis | 1518–1687 | 169 | 2 | secession 1518 | conquest 1687 |
| Vijayanagara | 1336–1565 | 229 | 1 | not recorded | not recorded |
| Bengal Sultanate | 1352–1576 | 224 | 0 | not recorded | not recorded |
| Hyderabad State — the Nizams | 1724–1948 | 224 | 1 | not recorded | not recorded |
| Delhi Sultanate — the Mu'izzi/Shamsi Slave Kings | 1206–1290 | 84 | 1 | not recorded | not recorded |
| Delhi Sultanate — the Khaljis | 1290–1320 | 30 | 0 | not recorded | not recorded |
| Delhi Sultanate — the Tughluqids | 1320–1414 | 94 | 1 | not recorded | not recorded |
| Kashmir — the Shah Mir line and the Chaks | 1339–1588 | 249 | 1 | not recorded | not recorded |
| Khandesh — the Fārūqī Rulers | 1382–1601 | 219 | 0 | not recorded | not recorded |
| Jaunpur — the Sharqi Sultans | 1394–1483 | 89 | 0 | not recorded | not recorded |
| Sultans and Rulers of Malwa | 1402–1562 | 160 | 1 | not recorded | not recorded |
| Gujarat Sultanate — the Muzaffarids | 1403–1573 | 170 | 2 | not recorded | not recorded |
| Delhi Sultanate — the Sayyids | 1414–1451 | 37 | 0 | not recorded | not recorded |
| Delhi Sultanate — the Lodis | 1451–1526 | 75 | 0 | not recorded | not recorded |
| The Mughal Empire | 1526–1858 | 332 | 1 | annexation 1636 | not recorded |
| The Sur Sultanate — the Delhi interregnum | 1540–1555 | 15 | 0 | not recorded | not recorded |
| Nawabs of Bengal (Nawwab-Nazims) | 1704–1765 | 61 | 1 | not recorded | not recorded |
| Awadh — the Nawab-Viziers and Kings of Oudh | 1722–1856 | 134 | 1 | not recorded | not recorded |
| Punjab — the later Ghaznavids of Lahore | 1157–1186 | 29 | 0 | not recorded | not recorded |
| Northern India — the Ghurids | 1186–1206 | 20 | 0 | not recorded | not recorded |
| Ma'bar — the Sultans of Madura | 1334–1377 | 43 | 0 | not recorded | not recorded |
| Sind — the Arghūns and Tarkhāns | 1520–1591 | 71 | 0 | not recorded | not recorded |
| Sind — the Soomra Dynasty | 1026–1351 | 325 | 2 | not recorded | not recorded |
| Sind — the Samma Jams | 1351–1524 | 173 | 2 | not recorded | not recorded |
| Multan — the Langah Sultanate | 1445–1530 | 85 | 1 | not recorded | not recorded |
| Sind — the Kalhora Dynasty | 1701–1783 | 82 | 0 | not recorded | not recorded |
| Sind — the Talpur Mirs of Hyderabad | 1783–1843 | 60 | 0 | not recorded | not recorded |
| Sind — the Talpur Mirs of Khairpur | 1783–1947 | 164 | 0 | not recorded | not recorded |
| Kalat — the Khanate of Kalat | 1666–1948 | 282 | 1 | not recorded | not recorded |
| Carnatic — the Nawabs of Arcot | 1692–1855 | 163 | 1 | not recorded | not recorded |
| Bhopal — the Nawabs and Begums | 1707–1949 | 242 | 0 | not recorded | not recorded |
| Rampur — the Rohilla Nawabs | 1774–1949 | 175 | 0 | not recorded | not recorded |
| Rohilkhand — the Rohilla Chiefs | 1721–1774 | 53 | 0 | not recorded | not recorded |
| Farrukhabad — the Bangash Nawabs | 1714–1801 | 87 | 1 | not recorded | not recorded |
| Tonk — the Nawabs | 1806–1949 | 143 | 0 | not recorded | not recorded |
| Junagadh — the Babi Nawabs | 1730–1948 | 218 | 0 | not recorded | not recorded |
| Malabar — the Arakkal Sultanate | 1545–1819 | 274 | 1 | not recorded | not recorded |
| Janjira — the Siddi Nawabs | 1489–1948 | 459 | 0 | not recorded | not recorded |
| Savanur — the Nawabs | 1680–1948 | 268 | 0 | not recorded | not recorded |
| Kurnool — the Nawabs | 1687–1839 | 152 | 1 | not recorded | not recorded |
| Banganapalle — the Nawabs | 1665–1948 | 283 | 0 | not recorded | not recorded |
| Palanpur — the Lohani-Jhalori Nawabs | 1370–1948 | 578 | 0 | not recorded | not recorded |
| Radhanpur — the Babi Nawabs | 1753–1948 | 195 | 0 | not recorded | not recorded |
| Cambay — the Nawabs | 1730–1947 | 217 | 1 | not recorded | not recorded |
| Sachin — the Siddi Nawabs | 1791–1948 | 157 | 0 | not recorded | not recorded |
| Mysore — Haidar Ali and Tipu Sultan | 1760–1799 | 39 | 0 | not recorded | not recorded |
| Bahawalpur — the Daudpotra Abbasi Nawabs | 1748–1947 | 199 | 0 | not recorded | not recorded |
| Amber — the Kachhwaha Rajputs | 1028–1949 | 921 | 1 | not recorded | not recorded |
| Mewar — the Sisodia Ranas | 1326–1947 | 621 | 1 | not recorded | not recorded |
| Marwar — the Rathore Rajas | 1459–1949 | 490 | 1 | not recorded | not recorded |
Why a cube, and only one
Torsten Hägerstrand proposed this in the early 1970s and called it an aquarium. It has exactly one measured advantage and one measured cost, and both matter. Asked about the overall structure of a dataset, readers using a cube were twice as fast — 121 seconds down to 60. Asked where something was in a particular year, they made more errors than readers given a flat map.
So this is a companion and never the way in. Ask it about shape — who overlapped whom, which century is crowded, how long a thing lasted beside the thing next to it. Ask Contested Ground what was happening in 1687.
What standing up makes visible
Two things, neither of which survives being flattened. The first is duration as a shape: Vijayanagara and the Bahmani sultanate are near-equal columns rising together from the fourteenth century, and the eye reads that parity instantly in a way two bars on a chart do not deliver. Berar is a stub. The Nizams are a spike that outlasts everything around it by two centuries.
The second is uncertainty with dimensions. Every archive footnotes its disagreements; this one collects them, and standing up they take up room. Bidar’s five published start dates are five rings spaced along the axis in proportion to how far apart the authorities really are — you can see the argument covers half a century without reading a word of it. Malik Ambar’s four death dates are a smear you can hold a finger against.
Shape on one side, sequence on the other
A cube is good at shape and bad at order. Standing among the columns you can see at once which centuries are crowded and which state outlasted which — and you cannot easily say what happened next. So the same events run down the side in order, and the two halves point at each other: run your eye down a line to light its mark in the tank, or click a mark to find its line.
The list carries the doubt too. A year printed one way sits alone; a year the authorities argue about is shown as the span of the argument, so 1487–1542 tells you before you click that Qasim Barid’s beginning has been placed anywhere across fifty-five years.
Still no borders
Nothing here is a territorial claim. A column stands where a capital stood, because that is a coordinate the archive can cite; a cloud fades outward because influence does, and because no source read supports a line where it would end. Where two clouds overlap they brighten, and that brightening is the only thing in the tank drawn twice — it is the nearest this archive comes to saying two states wanted the same ground.
Empty space is no claim, not empty land. And the same 1688–1723 hole that shows on the flat map shows here as a band with nothing standing in it.