To maintain their credibility, the creators of the declaration had to:

To give specific examples of how they had been mistreated.

Explanation:

The authors of the Declaration of Independence wanted people to both support, and understand, their project. In order for everyone to do so, they needed to explain why they believed independence to be better. They also wanted the English people and government to be aware of the role they had played in this process. Therefore, they give us several examples of how they had been mistreated. Among the grievances they mention, they tell us that the King refused to assent to the colonies' laws, forbade the governors of passing them, and called together legislative bodies at places that were unusual, uncomfortable, and distant.

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