Question

in the 1840s, what was the main disagreement between mexico and the republic of texas?
the border between the us and mexico
the practice of slavery in texas
the border between texas and mexico
the practice of slavery in mexico

Explanation:

To solve this, we analyze each option:

• Option 1: The disagreement was between Mexico and Texas, not US and Mexico (Texas was a republic then, not part of US yet), so eliminate.
• Option 2: Mexico had abolished slavery, but the main disagreement with Texas (which allowed slavery) was not about slavery practice in Texas itself, but border. Eliminate.
• Option 3: In the 1840s, the Republic of Texas claimed the Rio Grande as its southern border (with Mexico), while Mexico claimed the Nueces River. This was the main border disagreement between them.
• Option 4: Mexico had already abolished slavery, so the disagreement wasn't about slavery in Mexico. Eliminate.

Answer:

C. the border between Texas and Mexico