The High Plains. The states of Kansas, Minnesota, Nebraska, North Dakota and South Dakota form Area Two, the high plains region of the country. Winters in these areas tend to be extremely cold (well below the freezing mark) and dry, particularly in the more northern areas of the region.
Good manners is about considering the feelings of other people, and being the kind of person that others will like and respect. In the 'olden days' children were taught about the Golden Rule - Always do to others as you would wish them to do to you if you were in their place..
civil, polite, and courteous mean following the rules of good behavior. civil is used for showing only enough proper behavior to avoid being actually rude. I know you're angry but try to be civil. polite is used of good manners and thoughtfulness. The host was polite and made us feel at home.