Answer: President Martin van Buren
Explanation: President Martin van Buren refrained from annexing Texas after the Mexicans threatened war.
The correct answer is: Ralph Waldo Emerson spoke out against the acquisition of the Southwest following the Mexican-American War.
Ralph Waldo Emerson was an American essayist, lecturer, philosopher, and poet who led the transcendentalist movement of the mid-19th century. He was seen as a champion of individualism and a prescient critic of the countervailing pressures of society, and he disseminated his thoughts through dozens of published essays and more than 1,500 public lectures across the United States.
I don't know if I'll type you a whole essay... but!
There are a lot of factors that contribute to the German army's early victories. One of the biggest is the amount of modernization that the German nation went through, they developed new weapons and vehicles that would help supplement their new Blitzkrieg tactics. Another factor is the fact that the Allied Nations (Britian and France) were doing their best to appease the aggressive German nation, they allowed them to breach the confines of the Treaty of Versailles and invade neighboring nations. Another factor is that Hitler had major ambitions and dreams for what he thought was possible and was in a position to have perhaps some of the greatest engineers this world has known create his crazy ideas, many of which crafted modern warfare.
That would be Adolf Hitler, as stated in this source (History.com) "Hitler appointed a new Nazi government, and on March 13 the Anschluss was proclaimed. Austria existed as a federal state of Germany until the end of World War II, when the Allied powers declared the Anschluss void and reestablished an independent Austria."