They changed from the use of an unwritten constitution to a written constitution.
Explanation:
Following the end of the Revolution war between the colonists and the British. The war led to colonists independence. However, the obvious changes the colonists made after the revolutionary break-up are:
1. They changed from the use of an unwritten constitution to a written constitution.
2. The created Articles of Confederation
3. A unicameral legislature and an Executive Council was also created.
