Both favored three branches of government. Glade this can help.
Answer:
Anarchism and the Bolshevik revolution in Russia with the spread of socialism.
Explanation:
The answer is either Ethnic, or social. I'm not too sure, but I'm leaning towards Ethnic. Hope I could help!
The geographic factors pretty much determined the main activities that people do every day. Indus valley civilization is located near the gange rivers and the land surrounding it is really rich in nutrients.
Because of this geographical condition, people rely on agricultural activities as their main economy since it's really easy to produce good quality agricultural products with a number of nutrients and water.