If all workers and all jobs were the same such that all workers were equally well suited for all jobs, then there would be noa. structural unemployment. b. cyclical unemployment. c. frictional unemployment. d. natural rate of unemployment.

A : structural unemployment

Explanation:

Where all workers and all jobs were the same such that all workers were equally well suited for all jobs, then there would be no structural unemployment. Structural unemployment occurs due to the unsuitability of the employees regarding jobs assigned to them usually due to technological changes. In the above case, as all the workers are well suited for all jobs, it will save them from getting unemployed.

i'm pretty sure the answer is 60.

the first successful, urban blues recording, selling more than 75,000 copies, was made in year 1920.

mamie smith recorded the first commercially successful example of the urban blues,   with the recording of “crazy blues”."crazy blues" was recorded on august 10, 1920, in new york city. within a month of the release of “crazy blues” it had sold 75,000 copies.