Why did Jefferson choose to begin the Declaration with the words "The unanimous Declaration of the 13 United States of America"?

Explanation: Jefferson chose to begin the Declaration with these words because after an extensive vote to find out who was in favor or against Independence, a common agreement was reached to dissolve all dominion by England to the thirteen colonies of the United States of America. This decision was with their full consent, after this process they chose to write a document to declare their independence from the Kingdom of Great Britain and submit it for further review. Both the title and all content were carefully reviewed and edited, to finally be chosen as well as all the final content.

Jefferson chose to begin the Declaration with those words because he wanted the world to know that the 13 colonies were united as one country and that the decision to gain independence from Britain was taken by all of them.