[Solved] Wounded Knee ended in a massacre of Native Americans by U.S. soldiers using an early version of a rapid fire gun, known by what name?

The Question: Wounded Knee ended in a massacre of Native Americans by U.S. soldiers using an early version of a rapid fire gun, known by what name?

Maxim Gun
Gardner Gun
Puckle Gun
Gatling Gun
Hotchkiss Gun

The correct answer is Hotchkiss Gun.