Panama Canal
France began work on the canal in 1881, but stopped due to engineering problems and a high worker mortality rate. The United States took over the project in 1904 and opened the canal on August 15, 1914. One of the largest and most difficult engineering projects ever undertaken, the Panama Canal shortcut greatly reduced the time for ships to travel between the Atlantic and Pacific Oceans, enabling them to avoid the lengthy, hazardous Cape Horn route around the southernmost tip of South America via the Drake Passage or Strait of Magellan.
Panama Canal Railway
In May 1850, the first preparations were begun on Manzanillo Island, and the start of the roadway was partially cleared of trees and jungle on the mainland. Very quickly, the difficulty of the scheme became apparent. The initial of the proposed route passed through a jungle of gelatinous swamps infested with alligators, the heat was stifling, mosquitoes and sandflies were everywhere, and deluges of up to of rain for almost half the year required some workers to work in swamp water up to four feet deep. When they tried to build a railroad near Aspinwall, the swamps were apparently endlessly deep, often requiring over 200 feet (60 m) of gravel backfill to secure a roadbed. Fortunately, they had found a quarry near Porto Bello, Panama, so they could load sandstone onto barges and tow it to Aspinwall to get the backfill needed to build the roadbed.