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Tobacco changed Virginia because tobacco penetrated the social, political, and economic life of the colony. Ownership of a large tobacco plantation could take one up the social ladder; many of the men responsible for the welfare of the colony were planters, and everything could be paid for in tobacco.
Link is https://www.accessgenealogy.com/virginia/tobacco-in-colonial-virginia.htm
The main import was slaves but their was also other imports like gold silk and many other thing
Early settlers experienced challenges such as,attacks from American Indians and crop failure leading to starvation.
The settlers were able to overcome starvation by introducing corn farming in addition to tobacco farming. One of the major reasons why farmers had faced starvation was because the spent most of the time farming tobacco. in addition, Indians were very hostile,a problem that was resolved by increasing numbers of settlers and living together.