Vasco Da Gama was the first european.
The Declaration of Independence begins with the words "We, the people..." However, we have no explicit explanation of who these people are. Although the phrase is meant to represent the citizens of the United States, there is no consensus as to what that means. Therefore, the concept has been continually expanding in order to include new groups (for example, African Americans and women). This expansion has allowed more people to feel represented by the Constitution.
Answer:
because people reproduce and people from other countries move to one place