What construction work started in March 31 1909 and ended at 1912?

The construction work that started on March 31, 1909, and ended in 1912 was the building of the Panama Canal. This monumental engineering project aimed to create a shortcut for maritime trade by connecting the Atlantic and Pacific Oceans. The canal significantly shortened travel times for ships, reshaping global trade routes and maritime logistics. Its completion marked a pivotal moment in engineering and international trade.