Archaeologists generally define the by the presence of domesticated plants and animals.

Domestication

Explanation: The process by which a population of a certain animal or plant species loses, acquires or develops certain morphological, physiological or behavioral characters, which are inheritable and, in addition, are the result of prolonged interaction and selection artificially the human being or a natural selection adaptive to living with the human being.

true

coz they had the rank system in society according to the economic power of the people

martin luther king (1929-1968) was an activist for the african american rights, mr. king has a profile of a kind leader that built a tenacity, respect and full of hope future. he was an activist through civil disobedience and no violence pressure mechanisms. he tried to build a more egalitarian and fair society. his efforts carried a reivindication message of the civilian rights to every west corners. for that reason, he won the nobel prize in 1964.