What were the two most important changes during the progressive era?

what do you mean

travels along an axon. this triggers a wave of electrical activity that passes from the cell body along the length of the axon to the synapse

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.