They sometimes grew food for the union army (while the plantation owners were away).
Answer:
Blackfoot, Arapaho, Assiniboine, Cheyenne, Comanche, Crow, Gros Ventre, Kiowa, Lakota, Lipan, Plains Apache (or Kiowa Apache), Plains Cree, Plains Ojibwe, Sarsi, Nakoda (Stoney), and Tonkawa.
Answer:
B
Explanation:
this happened just before 1776
Answer: increasing efficiency in telecommunications.
Explanation: Concerns about air pollution led to stricter environmental regulations. Union membership increased as workers sought better pay and conditions.