To begin with, the League of Nations did have good intentions to begin with and to say that it was a complete failure would be egoistic in nature. The League had reduced much pain and sorrow after the events of World War I.
The Annexation of Texas, the Mexican-American War, and the Treaty of Guadalupe-Hidalgo, 1845â1848. During his tenure, U.S. President James K. Polk oversaw the greatest territorial expansion of the United States to date.
Mexican War When the US annexed Texas, President James Polk sent US troops to the border. Congress declared war after violence broke out. The US won and gained Texas and the Mexican Cession, taking Â½ of Mexico and expanding to the Pacific Ocean.