To begin to understand how this period began, this assignment focuses on watchin

To begin to understand how this period began, this assignment focuses on watching a PBS documentary called Foreigners on Their Own Land. 
The documentary title makes use of the actual words expressed by Juan Seguin, who was from an elite Tejano family that welcomed Anglo Americans and even fought along the side of Anglo Americans for Texas independence from Mexico. Seguin’s expression captures the essence of a larger process of becoming a foreigner on his own land of Texas and reflects the process of Mexicans becoming less included in the future of the southwest as Anglo domination and control increased with Mexico having lost the war imposed by the United States in 1848. 
After you watch this documentary respond to following major question and the questions below in number order: 
What does this expression of becoming Foreigners on Their Own Land mean as understood though the experiences of Juan Seguin? Or put another way, what did he go through that would provoke him to express such statement? How does his experience reflect this process? Explain your response and support with details of how you are understanding this statement to mean.  
Can you find a similar parallel of becoming a foreigner on their own land with the experiences of another historical figure or events discussed in this documentary such as Apolenaria Lorenzana, Mariano Vallejo, and/or Las Gorras Blancas, the Gold Rush etc. told through this documentary? Explain your response and support with details of how you are understanding this statement to mean.  
Why did the Seguin family, and other Tejano families, decide to welcome Anglo families to Texas when it was still part of Mexico? 
What do you think about Prof. David Montejano’s statement about Juan Seguin having a conflicted identity for referring to himself as John? 
What is the Treaty of Guadalupe Hidalgo? When was it created and what kind of protections was it supposed to provide Mexicans living in what would be considered new US territory?