The British abandoned Boston in early 1776 because they were forced out of the country by the American soldiers.
American Revolutionary War was at large, and the Patriots, led by general Washington (who later became the first president of USA) won the battle at Boston, which was bloodless, by the way. This brought an end to an eight-year British occupation of the city.
Joseph Stalin was the powerful and ruthless leader of the soviet union from 1929-1953
The correct option is D.
Scientific revolution refers to the principle which historians employed to explain the emergence and rapid development of modern science. The scientific revolution started in Europe at about 1543 and it brings about a great change in the way people think. During this period, people started criticizing thoughts that were previously acceptable and unchallenged; it also led to the establishment of many modern sciences.
So far as I know, there are no prison ships in New York harbor. The closest thing would be the prison on Riker's Island. By "Patriot POWs" do you mean political prisoners of some sort?