If the government wanted to slow down the economy's growth it would increase government spending and cut taxes. The more you spend, the more that needs to be compensated for. If they cut taxes, less money would fill the deficit, therefore slowing down the economy's growth.
That would be the Louisiana purchase of 1803.
People were hired without restrictions. That's the correct answer.
Moral diplomacy was a major tool for the United States to pursue its economic interests abroad.
In the end, moral diplomacy increased the U.S.'s direct military action in many countries and also greatly impacted the economy by manipulating situations in countries that were not democratic or those that held what Wilson viewed as morally corrupt values.