The document provides information about the history and construction of the Panama Canal. It describes early efforts by the Spanish and French to build a canal across the Isthmus of Panama in the 1500s and 1800s. The French began construction in 1881 but the project failed after 20,000 workers died and it cost $287 million. The United States took over the project in 1904 and opened the canal in 1914, which shortened ocean travel times significantly. Building the canal presented enormous challenges due to the tropical climate and terrain.