Why would anyone get rid of a territory that can have countless riches in minerals, water, soil and in some cases land rich in oil or simply be used as a strategic point for a mere commercial transaction? I don't believe! Yes, the United States annexed part of its territory by purchasing it from other countries, however I do not believe that the sellers got rid of these territories because it was a good commercial transaction, but rather, they were forced by geopolitical circumstances at the time.