According to Historian Norman Graebner,the United States Did Not Annex

Multiple Choice

According to historian Norman Graebner,the United States did not annex all of Mexico because they already had ________.

A) U.S. citizenship for thousands of Mexicans living in the territory
B) the grazing lands of the southwest
C) the fertile farming lands of new Mexico
D) the harbors of California
E) the deserts of Arizona