One very famous, perhaps the most famous way was through improvised vaccination. Specifically, George Washington ordered his healthy men to be injected with substance taken from the wounds of the sick men during a smallpox infection.
A risk was that those men would get sick just like the the sick men did, but the the potential reward would be that they would get sick in a controlled way and that they would be able to fight this disease.
Answer: EASTERN EUROPE
Context/explanation:
US president Franklin Roosevelt, British prime minister Winston Churchill, and Soviet premier Joseph Stalin, the leaders of the Allies in World War II, met at Yalta in February, 1945.
Churchill and Roosevelt pushed strongly for Stalin to allow free elections to take place in the nations of Europe after the war. At that time Stalin agreed, but there was a strong feeling by the other leaders that he might renege on that promise. The Soviets never did allow those free elections to occur. Later, Winston Churchill wrote, ""Our hopeful assumptions were soon to be falsified." Stalin and the Soviets felt they needed the Eastern European nations as satellites to protect their own interests. A line of countries in Eastern Europe came into line with the USSR and communism. Churchill later would say an "iron curtain" had fallen between Western and Eastern Europe.
Well, both countries contained ancient civilizations, Egypt being the Egyptians and Nile River Valley, and India being the Indus River Valley civilization. Also, the people of both regions had specific religious beliefs like in Egypt, they believed in, well, Egyptian gods and goddess and in India, at the time it might have been anywhere from indigenous beliefs, to Islam, to Hinduism. Both regions made important technology civilizations that impact us even today. Both regions were a culture hearth and at their peak, they thrived and prospered immensely.
