What was thomas edison, hiram maxim and joseph swan known for?

Brainliestttme : describe the following event: increase in islamic extremism in the middle east

1. how did the works progress administration (wpa) contribute to the cultural development of american cities? a. by paying artists to create new works for public spaces b. by granting scholarships to underprivileged students to study art c. by sponsoring cultural exchanges with musicians from other countries 2. which of the following best describes the effect of the new deal on the great depression? a. the new deal eased the effects of the great depression. b. the new deal alone ended the depression. c. production rates during the great depression only fully recovered as the united states prepared to enter world war ii.

According to the points given on the the frontier (line), when 25 million skateboards are produced, how many rollerblades can be produced?