Explain which theme , region , and period a historian would focus on to learn about Parisian music 100 years ago.

The historian should study the musical societies that were formed in Paris in the early 20th century and their influence throughout the region.

Explanation:

The beginning of the 20th century was marked by a troubled historical context, throughout France. In situations like this, it is common for society to have a great artistic production as a form of escape from conflicting and uncertain reality. In Paris, this was no different, especially in the field of music with the formation of musical societies, which were responsible for dictating the direction of French music, in addition to attracting a new musical thinking and generating influential composers such as Claude Debussy, Maurice Ravel, Erik Satie and others.

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.

the answer would be a).