What technological advances made european exploration possible?

Technological developments in three fields made it possible for Europeans to explore faraway places overseas starting in the fifteenth century. These were developments in shipbuilding, navigation, and weapons. Nimbler and faster ships, particularly the caravel allowed European sailors to make long sea voyages into unknown waters.

Explanation: Give me the brainiest

to protect the united states' role as a world leader, president truman wanted to prevent the soviet union from spreading communism beyond its post-world war ii boundaries. he declared that the united states must assist any nations struggling to prevent a communist takeover.