During Polk's presidency, he decided to accomplish 4 main goals that he set up for himself. His goals was to end the dispute over the Oregon Territory, institute an Independent Treasury, gain California from Mexico, and reduce tariffs. Throughout his presidency, he was able to accomplish all of his goals.
Most economies are considered mixed because most have some portion of the means of production under government control. Most economic systems also have some element of the market or capitalism. ... The most vulnerable members of society benefit from a mixed economy because they are offered some social safety net.
2: chemical energy in bonds of organic molecules sounds about right....
Pre Columbian is before Columbus travelled to the Americas in 1492 (thus starting globalization and connecting the Old and New world). I think it's generally used to refer to the New world areas.
Mesoamerica is "middle America" and is pretty much Mexico, Central America, and/or the Carribean.
