1 Who are known as the "Lord of The Plains", because of their horse back skills and fighting ability?

The Comanche became the dominant tribe on the southern Great Plains in the 18th and 19th centuries. They are often characterized as "Lords of the Plains" and they presided over a large area called Comancheria, which came to include large portions of present-day Texas, Colorado, New Mexico, Oklahoma and Kansas.

Explanation:

Google. dont type word for word because your teacher by dab on you

the northwest ordinance of 1787 guaranteed basic rights for settlers and banned slavery there.