Answer:
Five dynasties ruled over the Delhi Sultanate sequentially: the Mamluk/ Slave dynasty (1206–1290), the Khilji dynasty (1290–1320), the Tughlaq dynasty (1320–1414), the Sayyid dynasty (1414–1451), and the Lodi dynasty (1451–1526). It covered parts of India, Pakistan, Bangladesh and some parts of southern Nepal.
Explanation:
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Engulfed in the dust storm
I bet many things happened in 1790, on Brain.ly you need to be more specific. :)