What is George calvert's American colony

The english statesman, George Calvert, projected the founding of the North American province of * Maryland*, in an effort to find a sanctuary for practicing Roman Catholics. The charter made by George made * Maryland * the first colony controlled by a single proprietor. Joint-stock companies controlled the other colonies, but the Maryland charter granted rare autonomy and control to the Calvert family. Lord Baltimore (George) could govern the colony similar to an independent country.