Why did the colonies vote for independence?
The colonies voted for independence to break free from the British oppression.
How many colonies voted in favor of independence from Great Britain during the initial vote on July 1?
Did the Declaration of Independence say that the ruler of the colonies will be elected by a vote of the people?
All of the thirteen colonies voted in favor of the Declaration of Independence, although New York's vote came after July 4. The Declaration of Independence was adopted by the Second Continental Congress, which consisted of a delegation from each colony. Each delegation was entitled to one vote on behalf of its colony, and was obligated to vote in accordance with the instructions of their colonies. In May 1775, when the Congress first met, most colonists…
By mutual consent all thirteen had to vote in favor of independence. That's why the formal document (the "Declaration of Independence") specifically points out that this is a unanimous declaration. (This does not mean every single individual in Congress, but that each colony's/state's delegation would vote, and a majority of "no's" in any delegation would defeat the measure.)