I’ll give you two:
Yes: The “War” on the Indians was not a traditional war of declaration but of skirmishes. When wagon trains of people headed West Indians would commonly target them for raids and pillage, so along many routes forts where built and patrols would try and make sure they were safe. If the problem became worse the local garrison would find the tribe and come with a list of demands. Most of the time they were fired upon arrival out of fear or anger. This would lead to a small battle or skirmish which would likely cause collateral damage.
No: The wars raged in the west against the Indians were that of near genocide, and to call it anything but is misleading. To claim that the slaughter of hundreds of innocent people was a “battle” is absurd and shouldn’t be considered. Though in films that depict such events are dramatized and inaccurate, situations much like those were taking place around the west yearly.
It cause the natives to change their culture and the world around them
African Americans in the civil war didn't go into combat so it would B or the second choice
It has. It has allowed diversity and culture to spread in mix in so many ways, it's unbelievable. Many different forms of talent, and tolerance has grown and made our country what it is today.
Hope this helps! :)