Answer: I was a preventative mesuare against polio
Explanation:
Polio is a virus that caused muscle weakness. Although most people fully recover it became a big problem in the US. That is what the vaccine was created. You could say it saved America.
The correct option is A
The partition of India was the partition of the British Indian Empire which resulted in the creation of the sovereign States of the Dominion of Pakistan (which later divided into Pakistan and Bangladesh) and the Union of India (later Republic of the India) on August 15, 1947.
In the riots that preceded the partition in Punjab province, there were between 200,000 and 2,000,000 deaths recorded in the genocide between religions. UNHCR estimates that 14 million Hindus, Sikhs and Muslims were displaced during the partition: it was the largest mass migration in the history of mankind. This marked the relations between India and Pakistan, which are still bad.
According to the Indian census of 1951, 2% of the population of India were refugees (1.3% from West Pakistan and 0.7% from East Pakistan). Delhi received the largest number of refugees for a single city, the population of Delhi grew rapidly in 1947 from being below 1 million (917,939) reached a little less than 2 million (1,744,072) during the period 1941-1951 .
Both america and russia had missiles in different places threatening each other.<span />
Along the fall line, eastern rivers break into rapids and waterfalls preventing many ships from the Atlantic Ocean from traveling further inland. Many cities were established here.