Zheng He's voyages to the West 1405 to 1433. Zheng He led the fleet to the Western Ocean seven times. Zheng He's fleet adopted the most advanced ocean navigation technology in the world at that time, which could accurately determine the sailing route and position and effectively use the monsoon current to sail.

From Magellan 15 19 to 1522, Magellan's fleet sailed around the earth for the first time, ending the argument between terrace and geography and confirming that the earth is a sphere.

Columbus Discovered the New World 1492 In August, Columbus led three ships and sailors to set sail from Barros Port, crossed the Atlantic Ocean and arrived in Bahamas, Cuba and Haiti. , and then three times to the west, to Puerto Rico, Jamaica and Caribbean coast jewelry in Central and South America.