Answer: 12
Explanation: The facctors they have in common are 2 x 2 x 3. Multiply those and you have 12.
Answer:
"A one-party system is a form of government where the country is ruled by a single political party, meaning only one political party exists and the forming of other political parties is forbidden.
The 1979 Revolution established the Islamic Republic - a form of government that Iran still has today.
It overthrew the Shah Muhammad Reza Pahlavi (so it abolished a form of monarchy) and it took about a year, form January 1978 till February 1979.

A river valley civilization is an agricultural nation or civilization situated beside and drawing sustenance from a river. A "civilization" means a society with large permanent settlements featuring urban development, social satisfaction, specialization of labor, centralized organization, and written or other formal means of communication. A river gives the inhabitants a reliable source of water for drinking and agriculture. Additional benefits include fishing, fertile soil due to annual flooding, and ease of transportation. The first great civilizations, such as those in Mesopotamia and Ancient Egypt, all grew up in river valleys. Tigris River flourished near Mesopotamia civilization and river nile flourished near civilization of Egypt.
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