Spain was the first European country to conquer and colonize the Americas.
The first European country to conquer and colonize the Americas was Spain. Spain's colonization efforts were led by Christopher Columbus, who made the first voyage across the Atlantic in 1492. To find the answer to this question, you can rely on historical knowledge or refer to reputable historical sources such as books, scholarly articles, or reliable websites that discuss the Age of Exploration and European colonization of the Americas.
