In u. s history, 19th century use of term american frontier refers to

Which sociologist posits that, as a society modernizes, it must rely less on tradition, and more on rational, and impersonal procedures?

On their way home, what do claudia and jamie decide to do? a. visit the museum every week with mrs. frankweiler and make more discoveries about the exhibits b. tell saxonberg about the mystery behind the angel statue and give the sketch to the museum c. introduce mrs. frankweiler to their parents and tell her that they have adopted her as their grandmother d. visit mrs. frankweiler as often as they can and adopt her as their grandmother

In exchange for land, a knight agrees to be a sort of sub-vassal to a vassal. this agreement was known as: investiture homage tyranny subinfeudation