Final answer:
It is true that Americans were the fastest growing immigrant group to Texas in the 1820s, with significant influx starting in 1821, leading to them outnumbering Mexicans by 1827.
Step-by-step explanation:
True or False: Americans were the fastest growing immigrant group to Texas in the 1820's due to its location. This statement is true. The first major movement of American settlers into the Mexican province of Texas began in 1821, with Stephen F. Austin leading 300 families based on an invitation by the Mexican government to populate the region. By 1827, around 12,000 Americans were living in Texas, outnumbering the Mexican population by 5,000. Attracted by cheap land and exemptions from taxes, the American population in Texas exploded in the 1820s, contributing to the cultural tensions and ultimately, the Texas Revolution in 1835-1836.
Many Americans, especially slaveholders, migrated to the Lone Star Republic between 1836 and 1846, nearly tripling its population. Despite the Mexican government's attempts to stem American immigration in 1830, settlers continued to come, often illegally. By 1835, the number of Anglo-Americans had reached 20,000, and after the Texas Revolution, the Republic of Texas was established in 1836.