How did manifest destiny alter people's lives in the united states? native americans were forced to give up their land east of the mississippi river. people decided to settle west to the pacific ocean and south to mexico. people began to fear russia's and spain's intentions to set up colonies in the americas. it slowed down settlement of the oregon territory in the northwest united states.

Which best explains why the allies employed the europe first strategy during world war ii? a.japan was a greater threat than germany to the allies. b.japan received military assistance from germany, so the allies needed to defeat germany first. c.the allies wanted to ensure that germany did not continue to conquer european territory. d.the allies needed japan’s vast stockpile of weapons to defeat germany.