Final answer:
Pakistan and Bangladesh were parts of the British colony of India before their formation. Pakistan (East and West) was created upon India's independence in 1947 and Bangladesh became independent from Pakistan in 1971.
Step-by-step explanation:
Pakistan and Bangladesh were formed from which British colony after it gained independence following World War II? The answer is A) India. When the United Kingdom granted independence to India in 1947, the region was partitioned to create India as a predominantly Hindu country with two separate Muslim-majority territories on its eastern and western borders, known as East Pakistan and West Pakistan respectively.
These territories were collectively referred to as Pakistan. However due to cultural, linguistic and economic differences, and fueled by the grievances from the weak response to a devastating cyclone and a struggle for autonomy East Pakistan eventually fought for and gained its independence in 1971 becoming the nation of Bangladesh. West Pakistan continued on as the present-day country known as Pakistan.