I think the answer is positive feedback. hope this helps! :)
Tariff makes the most sense. Embargo is a ban on goods or a country, subsidy is money granted from the government to a business and has nothing to do with trade, quota is a limited amount of a product and again doesn't really have anything to do with trade.
Saw it as a place to get resources for their own industrial ambitions, compete for new markets for their goods and get many raw materials.
Answer:Sumerian farmers' invention of the plow helped them provide their city-states with a stable food supply. Before farmers invented the plow, they used animal horns or pointed sticks to poke holes in the earth.
Explanation:
It's about the problem of the divide between races, often invisible but sometimes physical.
