Historians use primary sources like diaries, letters, speeches. And secondary sources like articles.
The answer is A thirteen stars and stripes
Between 25 and 50 percent
Answer:
DURING THE AMERICAN REVOLUTION,
THE FORMER ENGLISH COLONIES EACH
ADOPTED THEIR OWN CONSTITUTIONS.
THESE FIRST STATE CONSTITUTIONS
PROVIDED THE BUILDING BLOCKS FOR
THE U. S. CONSTITUTION, INCLUDING
THE BILL OF RIGHTS.
Explanation: