The primary characteristic of a feudal society is the exchange of land for services.
The overlord will grant the vassal a land in exchange for the vassal's services. Services like fighting beside the lord in terms of war. Vassals have their own men and since the vassal is at the service of the overlord, his men is also at the service of the overlord.
Everest was climbed in May 29th 1953 and is located Nepal China
A simplified circular flow model<span> illustrates how goods and services are exchanged in free </span>markets<span>. ... More detailed </span>circular flow models<span> sometimes include the </span>role<span> of government, financial institutions, and foreign firms in the conduct of business.
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<span>Governor's State of the State</span>