Final answer:
The claim about Martin de Leon settling families by the Sabine River in 1829 is false; it was Stephen F. Austin who led 300 families into Texas in 1821 as part of Mexico's colonization efforts.
Step-by-step explanation:
The statement that Martin de Leon brought 200 families to settle by the Sabine River in 1829 is false. The historical event related to the early settlement of Texas mentions Stephen F. Austin who led the first 300 families into Texas in 1821 as part of the Mexican government's effort to populate the area. Over time, American settlers outnumbered the Mexican populace. There's no mention of Martin de Leon settling families by the Sabine River in this context.
The colonization of Texas is a pivotal moment in American history, showcasing the complex relationship and the impact of policies such as those by the Mexican president Vicente Guerrero outlawing slavery. These events led to significant cultural and demographic changes within the region.