Spain and portugal competed over territory in the americas as a result of the voyages of
a) ferdinand magellan.
b) vasco da gama.
c) bartolomeu dias.
d) christopher columbus.

provide an explanation on how you got your answer. you.

The answer is Christopher Columbus I just took the test . hope this helps

D) Christopher Columbus.

Explanation:

Christopher Columbus was a navigator, cartographer, admiral, viceroy and governor general of the West Indies in the service of the Crown of Castile. He is famous for having made the discovery of America, on October 12, 1492, upon reaching the island of Guanahani, now in the Bahamas.

He made four trips to the Indies - the name of the American continent until the publication of Martin Waldseemüller's Planisphere in 1507 - and although he was not possibly the first European explorer of America, he is considered the discoverer of a new continent - hence the name of the New World - for Europe, being the first to trace a round-trip route across the Atlantic Ocean and released the news. This fact decisively stimulated the worldwide expansion of European civilization, as well as the conquest and colonization by several of its powers of the American continent.

the answer would be choice c, cave paintings.

b. the 200th birthday of the united states