It's been a while but I believe it's C. Supply and Demand would fluctuate the prices.
They started domesticating wheat. This wasn't their main feat however since they also started herding sheep and domesticating goats. These two enabled them to stop moving around like nomads and make a real civilization in the area which resulted in what is now known as history.
B, because<span> Paine was advocating independence from Great Britain to people in the Thirteen Colonies.</span>
Mexico had declared its independence from Spain. With that being said, Spain had a war that lasted 11 years with them. After one town had declared independence, they started to spread as they had recruits coming in from everywhere. Finally, a Spanish soldier had joined in 1820 and brought an army to Mexico city, eventually capturing it.
One year later, Spain agreed to terms.
