The ancient egyptians were the first known people to develop
a. wooden boats
b. military armor
c. a 365-day calendar
d. a system of writing

Brazzaville and kinshasha, luanda,librevilleand and monrovia.

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