<span>During an unrestricted submarine warfare, one of the German U-boats had sunk the British passenger ship ,the Lusitania, at great loss of life. Public outcry in the U.S. led to America declaring war on Germany.</span>
Brown V. Board of Education helped the civil rights movement of the 50's as it declared that school segregation between white's and black's was unconstitutuional and therefor not allowed in the United States.
Colombia rejected the U.S. offer to build a canal through Panama.
