Expanded and easier to live and farm and grow.
Well history does show us some pretty cool heroes and some pretty bad villains, but some stories from history are not real for example Poseidon god of the see in Greek myth. Greek myth can be counted as part of history.
The main way in which Jefferson does this is to use the phrase "we the people" when writing the Declaration of Independence, since this can be meant to mean the people of the entire world.