(im answering for points))) looking for new opportunities like new jobs, owning land, and religious freedom
The characteristics that Americans used in the twentieth century is geographic mobility. It is a term described when measuring migrants in a group or even in a population. This the characteristic that they apply for they used this in the Plymouth Colony, in order to determine the migrants in the colony, to know how many are they as they are with them.
Checks and Balances is the answer you may be looking for.