How did the early west cause a cultural transformation in the united states? a: mexicans and americans were forced to live together after the mexican war, resulting in a mix of cultures in the western united states b: because of the gold rush, many cultures came to the west and interacted with each other, resulting in cultural awareness for the united states. c: the transcontinental railroad in the west allowed visits to foreign countries, and people were able to experience other cultures for the first time. d: the u. s. purchased the oregon territory from britain and mexico, and those citizens still lived there after the purchase, mixing their culture with american culture there.