The correct answer is Malaria
Malaria was a huge problem since it couldn't be treated and people mostly died from it. It prevented numerous explorers from venturing into places like Africa where Malaria was running rampant due to the huge amount of mosquitoes. When it was discovered, it enabled numerous people to live at ease because they could not live with the disease or prevent getting it.
Answer:Neville Chamberlain served as British prime minister from 1937 to 1940, and is best known for his policy of "appeasement" toward Adolf Hitler's Germany. He signed the Munich Agreement in 1938, relinquishing a region of Czechoslovakia to the Nazis. In 1939, Britain declared war on Germany.
Explanation:
The answer is C. Central Asia