What event prompted the Zacatecas revolt in 1835?

The event that prompted the Zacatecas revolt in 1835 was indeed the disbanding of the Mexican congress by Santa Anna. This act significantly undermined political stability in Mexico, creating widespread discontent among various factions, including military leaders and regional governments who opposed Santa Anna's centralized authority. The disbandment was viewed as an overreach of power and an affront to the principles of federalism that many Mexicans valued. The revolt in Zacatecas was a direct response to this autocratic behavior and reflected the broader conflict over governance and representation in the country at that time.

The other options do not directly relate to the immediate causes of the Zacatecas revolt. For instance, while battles and the plight of agriculture could contribute to discontent, they were not the specific triggers that led to the uprising. The abolition of slavery, while significant in Mexican history, did not have a direct connection to the Zacatecas revolt. Therefore, the correct answer highlights the specific political circumstances that set off the revolt.