Question

1. Why did Britain invade Afghanistan in 1839?

Answer 1

Answer:

sought to extend its control over neighbouring Afghanistan and to oppose Russian influence there.

Explanation:

Anglo-Afghan Wars, also called Afghan Wars, three conflicts (1839–42; 1878–80; 1919) in which Great Britain, from its base in India

hope it helps

Answer 2

Initially, the British successfully intervened in a succession dispute between emir Dost Mohammad (Barakzai) and former emir Shah Shujah (Durrani), whom they installed upon capturing Kabul in August 1839. ... The British then sent an Army of Retribution to Kabul to avenge the destruction of their previous forces.