In a feudal system, who has the greatest authority? sheriff noble king soldier.

Feudalism in 12th-century England was among the better structured and established systems in Europe at the time. The king was the absolute “owner” of land in the feudal system, and all nobles, knights, and other tenants, termed vassals, merely “held” land from the king, who was thus at the top of the feudal pyramid.

Explanation:

the answer is b, encourage free trade

answer:

d. because dr. laguardia selected a widely used measure, his study generalizes to has strong external validity. external validity has limited external validity. other applications of this measure.

the widely used measure that he applied to his experiment was the benton facial recognition test. it employed on to football players and as result, only players who suffered brain concussions did not pas this test. and although it has an external validity, it is limited because it isn't general to apply to other population.