Completar frases Global Citizenship 1st trimester reviewVersión en línea Fill in the blanks por Ana Vega 1 circled Cuneiform domestic pictographs Surplus inequalities disease The were used to symbolize a word or phrase . was the first system of writing developed by the Sumerians and it means - shaped . means more than what is needed . A is any sickness caused by a virus , bacteria , etc . These were spread through animals as a consequence of agriculture during the Neolithic Revolution . Social classes were created based on .
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