U.S. Department of State Office of the Historian Web site U.S. Department of State Office of the Historian Web site U.S. Department of State Office of the Historian Web site U.S. Department of State Office of the Historian Web site U.S. Department of State Office of the Historian Web site U.S. Department of State Office of the Historian Web site 20,000 workers died "Building the Panama Canal, 19031914" U.S. Department of State Office of the Historian Web site U.S. Department of State Office of the Historian Web site U.S. Department of State Office of the Historian Web site Building the Panama Canal, 1903–1914 Colombian government rejected U.S. Department of State Office of the Historian Web site Panama in 1903 U.S. Department of State Office of the Historian Web site negotiated a treaty U.S. Department of State Office of the Historian Web site U.S. State Department website U.S. Department of State Office of the Historian Web site "Building the Panama Canal, 19031914" U.S. Department of State Office of the Historian Web site U.S. Department of State Office of the Historian Web site Building the Panama Canal, 1903–1914 U.S. Department of State Office of the Historian Web site U.S. Department of State Office of the Historian Web site "Building the Panama Canal, 19031914" "Building the Panama Canal, 19031914" sent warships U.S. Department of State Office of the Historian Web site "Building the Panama Canal, 19031914"