2. What might make a person’s story more reliable?

(if it were told for like an interview)

Well detail would be a big part of being reliable. You also need to show them not tell them. Use a active voice. Use personal stories and a solid writing structure.

during the 20th century, the role of the vice president has evolved into more of an executive branch position. now, the vice president is usually seen as an integral part of a president's administration and presides over the senate only on ceremonial occasions or when a tie-breaking vote may be needed.

map scale refers to the relationship (or ratio) between distance on a map and the corresponding distance on the ground. for example, on a 1: 100000 scale map, 1cm on the map equals 1km on the ground.