What conditions existed in Mexico that led American settlers to feel discontented in Texas?

Due to unfavourable conditions.

Land ownership conditions existed in the Mexico that led American settlers to feel discontented in Texas. Mexican government imposed two conditions on land ownership i.e. settlers had to become Mexican citizens and they had to convert to the religion of Roman Catholicism. Without these two conditions, land ownership was not given by the Mexican government which is unfavourable conditions for the American settlers.

whose power in the senate is equal to the power of the speaker of the house?

missouri compromise of 1820 which prohibited slavery