how was this group that made the raids, formed?
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.  Comanche power depended on bison, horses, trading, and raiding.
Comanche
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.

Comanche power depended on bison, horses, trading, and raiding. The Comanche hunted the bison of the Great Plains for food and skins;
where was the battle of gonzales located in texas Gonzales, Texas for how long did it run? UNANSWERABLE what was the reason it was fought? In 1831, Mexican authorities lent the settlers of Gonzales a small cannon to help protect them from frequent Comanche raids.  Mexican troops in Texas, felt it unwise to leave the residents of Gonzales with a weapon and requested the return of the cannon and they refused to give the weapon.
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Comanche [SEP] Introduction
Comanche power depended on bison, horses, trading, and raiding. The Comanche hunted the bison of the Great Plains for food and skins; their adoption of the horse from Spanish colonists in New Mexico made them more mobile; they traded with the Spanish, French, Americans and neighboring Native-American peoples; and (most famously) they waged war on and raided European settlements as well as other Native Americans. They took captives from weaker tribes during warfare, using them as slaves or selling them to the Spanish and (later) Mexican settlers. They also took thousands of captives from the Spanish, Mexican, and American settlers and incorporated them into Comanche society.