The primary sources of information about the colonial era would include:
Journal entry by a member of the Second Continental Congress
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Explanation:
The second continental congress was established in 1775 in the Philadelphia city of Pennsylvania and was disbanded in 1781.
This congress was established when the war was started with Britain. This revolutionary war resulted in the independence of the United States of America.
The journal entry by a member of the second continental congress can be a primary source of information about the colonial era as they have penned down the incidents, events and other information regarding that colonial era in their journal that is a good source of authentic information.