HELLO PLEASE HELP! explain whether or not the Shoshones and the Sacajawea had a profound impact on Lewis and clarks expedition.

It covered the territory of land across eurasia from northeastern europe to the pacific ocean.

One of the things that allowed native americans in mexico to settle cities larger than those in areas to the north was "b. the development of cities that were built by an earlier civilizations," since mexico had been the home of some of the world's most advanced civilizations before the columbian invasion