How did william the conqueror crush rebellions

Generally speaking, William the Conqueror crushed rebellions by quickly killing the leaders of the rebellions, along with anyone who was found to support them--thus leading people to avoid associating with the rebellion in question. 

What he said

The native americans, spanish, french and americans all name places in our state. the word “arkansas” came from the quapaw indians, by way of early french explorers. at the time of the early french exploration, a tribe of indians, the quapaws, lived west of the mississippi and north of the arkansas river.