Question

why was the annexation of Sindh considered unreasonable and unjust​

Answer 1

Sind was annexed by the British and the Chiefs of Sindh named as Amirs are forced to sign the agreement in the 1839. As Sindh was in favor with British and also accepted the East India Company despite of the fact that Amirs was still accused for complexity with Afghan during the war. They were forced to give money to the British Military without doing anything wrong. This action of British toward Sindh was totally unfair and unjustified.