What are the restrictions Mexico placed on settlers in Texas?

Answer 1

When Mexico won its independence from Spain in 1821, all the territories it possessed included Mexico, most of Central America (Belize, Guatemala, El Salvador, Honduras, Nicaragua, Costa Rica and Panama) as well as today's US States of California, Nevada, Utah, Texas and parts of Colorado, Arizona, New Mexico, and Wyoming.

Due to the extremely low population for such territorial extension (estimated at 12 million during 1824), Mexico relaxed its Immigration policies, thus allowing American settlers to help populate the northern territories. The conditions to settle were simple: 1) to pledge allegiance to Mexico and 2) observe the Mexican Law and customs.