The first sentence although I believe the last one is also correct.
Answer:
Mexicans began to search for gold in Texas. Thousands of people came to Texas to claim land.
Answer:
<h2> A.I'm not sure just I add it</h2>
The Treaty of Ghent "<span>returned all national boundaries to their pre-war status," since the Treaty was seen as a "break even" treaty between the United States and Great Britain following the War of 1812. </span>
