Answer:Similarities -
-Social inequalities
-Developed civilizations independently
-Depended on agriculture
-All complex societies -- centralized governments
-Civilizations featuring cities, states, architecture
-No domesticated animals
-Interaction between Africa and Eurasia
Differences -
-Populations in Africa and Americas smaller than Eurasia
-Americas completely isolated/less linked
-Africa and Eurasia exchanged ideas, crops, animals
-Americas don't have technology/resources to make metal
Uneven distribution of human population (Eurasia -80%, Africa 11%, Americas 5-7%)
-No pastoral societies in America
-Africa was tropical creating health problems
-Climate, location, foods, products
Step-by-step explanation:
The three major continents of the world have similarities in terms of social inequalities, independent development of civilizations, reliance on agriculture, and complex societies, but they also have differences in population size, isolation, exchange of ideas, technological capabilities, and distribution of human population.