Explain the historical circumstances that led to the historical development depicted in the map.

During the end of the 19th century and the early 20th century the was becoming one of the most popular instruments in america? banjo fiddle guitar pianola (player piano) tambourine

Which events are correlated but do not necessarily have a causal relationship?

Conflict resolution can be difficult. which of these is the best example of how the us congress resolves conflict instead of always using a majority vote?