Fingerprinting and an fbi fingerprint identification system assisted in apprehending many guilty offenders and was the primary means of identification during what time?

The FBI added the Fingerprint Identification System as an official way to identify criminal in 1924.

Explanation:

In the year 1924, through the establishment of the Identification Division of the FBI, and the creation of the nucleus of the FBI fingerprint files, fingerprints became a reliable and secure way to identify people, since there are no identical patterns repeated from person to person. During the following decades, many fingerprints have been processed in order to create a more complete archive of identification, due to the veracity of fingerprints and it's cheaper cost in investigations in comparison with DNA.

b: to eliminate competition from other farmers