What have more recent studies shown on European discovery of America?

1-Columbus was first to actually sail across the treacherous ocean

2-Norsemen from northern countries had made earlier journeys

3-the king and queen of Portugal had sent earlier explorers

4-The natives of Hispaniola claimed others had come before Columbus

The correct answer is 2-Norsemen from northern countries had made earlier journeys.

Although most people believed that Columbus was the first explorer to discover America, in recent years a new evidence changed history.

500 years before Columbus, a band of Vikings led by Leif Erikson made an expedition to the east coast of North America and established a settlement.

The answer is

Norsemen from northern countries had made earlier journeys.