Which European countries during this period sent explorers north America east coast name three of these explorers?

Three European countries that sent explorers to the east coast of North America during this period were:

1. England: John Cabot, who explored the Newfoundland and Labrador coast in 1497, and Henry Hudson, who explored the Hudson River in 1609.

2. France: Jacques Cartier, who explored the St. Lawrence River in 1534 and Samuel de Champlain, who founded Quebec City in 1608.

3. Spain: Juan Ponce de León, who explored Florida in 1513, and Hernando de Soto, who explored the southeastern United States in 1539-1542.