They began go west instead of south
1. Abundant Natural Resources
2. Abundant Labor Supply
3.Railroads
4.Technological advances that saved time consuming labor.
5. Pro buisness government policies.
It is important because in 1836, during the Texas Revolution, somewhere around 200 rebels including Davy Crockett and James Bowie held out against 1,800 Mexican Soldiers under the command of Santa Anna, the Mexican dictator at the time, for thirteen days.
The three important findings are that Lee Harvey Oswald was the only shooter and that he acted alone, that Governor Connally probably had been wounded by the same "Magic Bullet" that killed Kennedy and that Jack Ruby had acted alone in the murder of Lee Oswald.
In short, The warren commission concluded that Lee Harvey Oswald acted alone.
Hope this helps !