Answer:
(1) Option A. Many nations in South Asia and Southeast Asia won independence after 1945 because Colonial powers had exhausted their resources in World War II. With the end of the War and most of the colonial powers with little to no resources as a consequence, many Asian colonies started their own path to gain independence and become autonomous.
(2) Option D. The partition between India and Pakistan in 1947 was mainly caused by religion differences between the population. The partition of British India involved the division of three main provinces based on Hindu or Muslim majorities.
(3) Option B. The ethnic group of the Bengalis was successful in their attempt to separate from another country and form their own nation. The group was a part of Pakistan until 1947 when they separated in order to form their own state which would become known as Bangladesh.