U-Boat attacks affected fighting on land by being able to strike fire onto land before sending troops to fight on the beaches.
Roosevelt supported the rebels because Columbia threatened to attack US workers if began on a canal.This attack created a sour relationship between Columbia's reigning government and the united states government. Because of this, Roosevelt provide the rebels with monetary funds and weapons in order to help them to override and restructure current government.
Answer:
Thomas Jefferson's Democratic-Republican views likely helped the economy of early America grow. His purchase of the Louisiana Territory in 1803 greatly expanded the land area of the United States, which began Manifest Destiny.
