Question

What weapons technology of the 20th century had the greatest impact on world history?

A. Radar and sonar technology had the greatest impact on world history.
B. Air force technology had the greatest impact on world history.
C. Nuclear weapons had the greatest impact on world history.
D. Tanks and other heavy vehicles had the greatest impact on world history.

Answer 1

Radar and sonar technology had the greatest impact on world history

Answer 2

Probably nuclear because as seen in the bombing of Hiroshima & Nagasaki, both cities were leveled with ruins of building left.