Which event was a direct result of the louisiana purchase and to lay the foundations for western expansion?

The memorable event is known as the Westward Expansion. Westward Expansion was significantly assisted in the 19th century by the Louisiana Purchase in 1803.President Thomas Jefferson initiated the expansion. He believed the Westward Expansion is the key to the nation’s success

Britain and its empire stood alone against hitler and mussolini. in june 1941, hitler broke the non-aggression agreement with stalin and germany invaded the soviet union. in december, japan attacked the us and britain. the main lines of world war ii had formed.