<span>The dominant social system in medieval Europe, in which the nobility held lands from the Crown in exchange for military service, and vassals were in turn tenants of the nobles, while the peasants (villains or serfs) were obliged to live on their lord's land and give him homage, labor, and a share of the produce, notionally in exchange for military protect</span>
Answer:A,B,C
Explanation:A,B,C are all duties and responsibilities of citzenship
Answer:
Option A.
Explanation:
Drive
, is the right answer.
In psychology, a drive theory is a philosophy that strives to examine, order or determine the psychological drives. It is an instinctual requirement that has the potential of driving the action of a person; an "excitatory event created by a homeostatic disturbance". This is based on the belief that people are born with some psychological obligations and that a contrary position of stress is generated when these needs do not get fulfilled. According to the assumption, drive tends to develop with time and works on a feedback regulator mode, such as a thermostat.
Immigrants increase the level of output, which is one of the main drivers of economic growth
