They used the windmills for water on the land and they used barbed wire fences to keep the cows in different part of the land so that they won't eat all the grass. The cotton gin help farmers get cotton so they can sell it to get money. They didn't use forts.
Thomas Jefferson authorized the Louisiana Purchase which means the correct answer for the first question is C.
In his farewell address, George Washington called the nation to remain united and even claimed that forming parties would be bad because it would split them. Therefore, the correct answer is A.
