Answer:
Gold was discovered on their land.
Also the Us army caused the war of settlers
Explanation:
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From Boston to New York city
In 1845, during the heated debate about the annexation of the Republic of Texas to the U.S. and the imminent war against Mexico, newspaper writer coined the phrase "Manifest Destiny" in order to imply that the U.S. was entitled by God to expand and spread the blessings of U.S. democracy and principles of freedom.
They were known as the slave codes
There was a few of these laws passed and they were used to determine when and for how long and how would someone become a slave. This included things like looking at the status of a mother, or looking at the status of their religion, or anything similar, including differentiation between indentured servitude and slavery.