Nathaniel Bacon was a colonist of Virginia Colony and he was known for instigating the Bacon's rebellion that ended when he himself died.
He led a rebellion against the wealthy land owners of Virginia in 1676 because he resented the Virginia's governor's friendly policies towards native Americans. Bacon was helping the African Americans as they endured attacks by natives and the Governor, William Berkeley refused to retaliate against the native attackers.
The purpose of the Lewis and Clark expedition in 1804-1806 was the first American expedition to explore the west, and map the newly acquired territory. They also wanted to find a practical route, and establish themselves. Studying the wildlife - plants, animals, etc - and establish trade with local indians was also an objective of the expedition!
Here so the other guy gets brainiest :)
They achieved unification in the 19th century!
It should be B, I read up on it and see nothing about land ownership.