Question

A unique discovery of modern technology in 20th century _____​

Answer 1

Explanation:

A unique discovery of modern technology in 20th century is films. Films began to be a part of human life by the end of 19th century (1890) and at the beginning of the 20th century.

Answer 2

Here's your answer :

A unique discovery of modern technology in 20th century is films.

Hope it helps you!!