Why did the pioneers cross the Great Plains, the Rocky Mountains, or the Mojave’s Desert to reach the American West

Which ofbthe following is a characteristic shared by both brazil and mexico

Sandstones that form in aeolian (wind/desert) environments appear very different from other sandstones, such as those formed in a beach/ shoreline environment and in rivers on land. give three identifying properties for each of the three sandstones that would tell a geologist which depositional environment they formed in. consider things such as the relationship between transportation and grain size, shape, roundness, sorting, fossils and composition.

Which of these has the least impact on the climate of a place