Thomas jefferson referred to westward expansion as establishing an "empire of liberty." what do you think he meant by that?

I think that what he meant is that he wanted to establish a society that gives many liberties to its population.

Pilgrims is the answer

Texas’ gulf coastal plains are the western extension of the coastal plain extending from the atlantic ocean to beyond the rio grande. its characteristic rolling to hilly surface covered with a heavy growth of pine and hardwoods extends into east texas. in the increasingly arid west, however, its forests become secondary in nature, consisting largely of post oaks and, farther west, prairies and brushlands.