What policies contributed to tensions between Texas and Mexico?

1. Annexation of Texas: The annexation of Texas by the United States in 1845 brought American settlers' confrontations with Mexican landowners closer to the Rio Grande. This fueled tensions and led to clashes between the two countries.

2. Disputes over Border: There was confusion over the precise location of the border between Texas and Mexico. The US claimed the Rio Grande as the boundary, while Mexico insisted on the Nueces River as the dividing line. This territorial disagreement added to the tensions.

3. Slave Ownership: The introduction of slave ownership in Texas, which was abolished in Mexico, further strained relations.

4. Cultural and Political Differences: The influx of American settlers, with different cultural and political values, created conflicts and tension with the existing Hispanic population.

5. Trade Restrictions: The US placed tariffs on Mexican imports and closed its ports to Mexican ships, which disrupted trade and harmed the Mexican economy.

6. Discrimination against Mexicans: Discrimination against Mexican citizens in Texas and the Southwestern territories sparked resentment and added to the tensions.