They were mostly made of mud...at least in Harappa
Answer:
Cuba has had a socialist political system since 1959 based on the "one state - one party" principle.Cuba is constitutionally defined as a Marxist - Leninist socialist state guided in part by the political ideas of Korl Marx,one of the fathers of historical materialism,Friedrich Engels and Vladimir Lenin.
theories-explain, organize, predict hypotheses-testable prediction operational definition-clear procedures used to define and measure research variables replication is important because it helps us reassure ourselves that our outcome was correct and to see if we must change our hypotheses or correct something in our experiment
Freedom of live
freedom of speaking