The factor that contributed the most to the destruction of the southern buffalo herds was the white settlers who came in the 1800s and battled with the Native Americans in various ways. A related factor was the over-hunting (sometimes on purpose) of the buffalo by the white settlers.
Groups of indians who followed herds of buffalo were
Decimation of buffalo herds
Before they were almost wiped out, bison herds in North America numbered in the millions and often stretched for miles.
Cattle herds
They followed the herds as they moved. One reason they had tepees that they could pack and move. The buffalo was a very special animal to the Native Americans.
The main factor that contributed to the destruction of the southern buffalo herds was the massive slaughtering of the herds by white hunters and entrepreneurs, encouraged and promoted by the U.S. Army. In 1840, more than sixty-million buffalo roamed the Plains, and by 1886, there were fewer than one hundred free-roaming buffalo left.
When the outsiders who were given lands by the government got migrated to the place, they looked at the buffaloes for hunting and sport. So eventually the factor that contributed to the destruction of southern buffalo herds is that trainloads of tourists killed buffalo purely for sport.
Death
The railroad contributed to the destruction of the bison herds.
nothing has been or will be done about the Buffalo herds
Groups of indians who followed herds of buffalo were
Buffalo aren't very rare and are found in large herds.
Nomads
They hunted buffalo herds.
The Sioux followed the buffalo herds around the plains. With the Transcontinental Rail-road (completed 1869), the herd was divided into two, with the Southern Herd destroyed in 1875 and the Northern Herd destroyed in 1883. The buffalo hunt ended before this though as the Sioux were put into reservations, starting with the Great Sioux Reservation, which was a good size, then working it down until it was no longer possible for them to hunt the buffalo. It decreased in size following a series of wars with the White Settlers, with the peak in 1876 at the Little Bighorn following the discovery of gold in the Black Hills (which were sacred to all Indians). The Indians could not leave the reservations to hunt buffalo, which is why the buffalo hunt ended way before the destruction of the herds.
o dont know
Yeah, they moved with the buffalo herds.