General obligation bonds are a type of municipal government bond, which is government debt issued to raise money to finance public improvements. A general obligation bond is a municipal bond backed by the credit and taxing power of the issuing jurisdiction, rather than the revenue from a given project.
The Mexican-American War began because of a clash between the Mexican Army and the US Army in the disputed border area called the Neuces Strip (See the Thornton Affair-see Related Link shown below).
The author goes into detail about the Mexican-American war: the takeover of Mexican land, and how it created foreigners out of natives overnight. This was the beginning of the American creation of Mexican dependence on the U.S. For many Mexicans, illegal crossing to the U.S. is the only choice for survival.