In the early 1600s, what did the english colonists in jamestown based their laws and government on

In 1607, a group of settlers first landed on Jamestown Island, approximately 60 miles from the mouth of the Chesapeake Bay. Almost immediately, the colonists were under attack from the Algonquian natives. Disease, famine and the continuing Indian attacks took their toll on the population. In the winter after Jamestown colony leader John Smith departed for England in 1609, only 60 of the original 214 Jamestown settlers survived. Though Jamestown struggled for decades, there were some years of prosperity following the marriage of Pocahontas, daughter of the Algonquian chief Powhatan, to John Rolfe. 
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