President Jimmy Carter based his foreign policy views on human rights. He ended US foreign aid to abusive US allies and was tough on other allies that abused human rights of their citizens.
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B. Wheeled transportation. Horses don’t need wheels and many civilizations existed prior to the invention of the wheel.
Some of the most valuable commodities that moved through the kingdom of Ghana between the 5th and 15th Century were Gold and Salt during the Trans-Haran trade. The beginning of Trans-Haran gold trade is linked to the Soninke Empire of Ghana in the 5th Century. While the consumption of Trans-Haran salt was promoted for trade purposes. Berbers from the North of Africa were able to cross the Sahara desert using camels with their caravans with gold sort from western and central Sudan. This linked the Mediterranean economies which demanded gold and in return they supplied salt.
I take spanish and I'm in middle school I don't understand the question 100% but if you are needing translations you can go to spanishdictionary.com
In a market economy households provide resources and labor and purchase goods and services while firms provide goods and services and purchase resources and labor. You can view the relationship between households and firms as a "circular flow"