It showed that the us could no longer stay in isolationism and it was to be probably the biggest influence in international affairs. When the us won ww2 and faced off with the soviet union it also showed that the us was the biggest world superpower.
Answer:
B. The dispute over Texas.
Explanation:
The settlement of Texas by American colonists since the 1820s, the separatist aspirations of American settlers in the 1830s and 1840s, the Battle of Alamo, the proclamation of independence by Texas and an unsolved border dispute; all of these events contributed to the outbreak of the Mexican-American War in 1846.