HEL ILL GIBE THE CROWN THINGY THING 4. The developments described in the excerpt best illustrate which of the following?

“[A]nnexing Texas had meant the addition to the Union of a huge southwestern state where slavery was legal, and slavery’s spread was something to which large numbers of Northerners were emotionally and politically opposed. This opposition increased and began to be more strident during the War with Mexico, which many in the North regarded as a war brought on largely by southern expansionists. Hostilities officially ended in February of 1848 with the Treaty of Guadalupe Hidalgo, as a result of which approximately one-fifth of the United States of 1849 was acquired by the victors. . . .”

-Source: Holman Hamilton, historian, Prologue to Conflict, 1964

a the rise of the abolition movement in northern states

b the end of a diplomatic relationship with Mexico

c the influence of regional identity in politics

d the increase in racial conflict after the Mexican-American War