Scientists, archaeologists and historians believe that the Americas were populated by peoples who crossed the land bridge between present-day Russia and Alaska, known as
or
possibly crossed the
in boats

the answer is definitley b!

trumans defeat to eisenhower in the 1948 elections was due to trumans approach and handling of the cold war and the war in korea. trumans approach to communism during the cold war was the principle reason for his defeat. eisenhowers reputation and name as the supreme allied commander in europe during world war two and his campaign slogan that he ''would go to korea if elected'' won him the presidency.