Which of the following is NOT a characteristic of a river valley civilization? * Warm climate

Near a river

Fertile soil

High elevation

How did the completion of the transcontinental railroad change the lives of american citizens? a-it increased the wealth of all americans and enabled them to travel more.b-it made cross-country travel too expensive for ordinary americans.c-it decreased the safety of americans who moved to settle the plains.d-it shortened travel time between the east and west for all americans.

What occupation did muhammad have before the first revelation? politician military general trader religious leader mark this and retum save and exit

Brainliesttt asap!me : describe the responses to terrorism in the united states.