Final answer:
The people of Texas began losing their purely Spanish culture and developing a culture of their own due to various reasons including the settlers' desire to maintain their American identity, their differing religious beliefs, their political dominance, and their contentious relationship with the Mexican government over issues such as slavery.
Step-by-step explanation:
The people of Texas began losing their purely Spanish culture and developing a culture of their own for several reasons. One reason was that many of the American settlers who migrated to Texas did not fully integrate into Mexican society. They brought their own traditions and expectations with them and did not adopt a Mexican identity.
Religiously, the Texans remained distinct from the Mexican population, with the majority being Protestant instead of Catholic. Politically, Texans dominated local government, which created tensions with the Mexican government. Additionally, the Texans' reliance on slave labor and their circumvention of Mexico's restrictive laws on slavery created economic and cultural tensions.
In conclusion, the people of Texas began losing their purely Spanish culture and developing a culture of their own due to the settlers' desire to maintain their American identity, their differing religious beliefs, their political dominance, and their contentious relationship with the Mexican government over issues such as slavery.