Plz !
10. under the feudal system, land was exchanged for gold.

11. in 1066, william the conqueror achieved political stability by starting the feudalism system.

It is the doctrine that the us had the right and duty to expand throughout north america. it just means they believed they had the right to expand westward and they did! they stated with the 13 colonies and then they kept moving gaining different territories throughout the years

Answerbeaches;