What happened on this land around c. 1783–1800 CE (late 18th century)?

Emergence of Qajar dynasty, partial reconquest and formal unification of much of Iran under Qajar rule by the end of the century.
Rulers
Zand dynasty (late 18th c.) then Qajar consolidation
Zand c. 1751–1794; Qajar consolidation from 1794–1796
A period of local rule culminating in Agha Mohammad Khan Qajar's reunification and Qajar foundation.
Battles
Agha Mohammad Khan Qajar's campaigns
1794–1796
Military actions that consolidate Qajar rule over Iran.