How did native americans spread out in the americas

Some european explorers sailed west looking for the passage to india

In the kingdom of saudi arabia the government controls every aspect of oil production which makes up the majority of the country's economy. while other businesses are owned by individuals, the biggest segment of saudi arabia's economy is oil production. saudi arabia's economy would best be described as a) entirely market. b) almost entirely command. c) a mixture between just market and traditional. d) a mixed economy with large amounts of command.

Of the 8 territories that were brought under the flag of the united states by 1853, which one do you think was the most important addition to the growth of the united states?