Why were medieval manors nearly self-sufficient?

Why were the numbering trials held from 1945 to 1946 ?

The political, economic, or cultural environment that surrounds an event provides the event with its

In 1816, john c. calhoun proposed that: a. that the federal government aid in the construction of roads and canals to improve transportation to and from the west b.the united states should end slavery. c.the united states should increasing the size of the navy and invade central america. d. the united states should annex hawaii