The Revolutionary War saw success because of the expansive and diverse terrain of the colonies that was far from Britain. Differences in geography between the north and south created sectionalism surrounding slavery, contributing to the start of the civil war. Entry into the World War I by the United States was delayed because of its geographical isolation from Europe. Ultimately, America was drawn into the war because the geographical location of American commerce entered German war zones where many civilians were killed. The location and resources of United States contributed to success in the Revolutionary War, the American Civil War, and World War I and the establishment of a strong nation.