Answer:
The used the ENIGMA cipher machine
Explanation:
The motivation for European exploration in the 15th and 16th centuries was A and D it is also true that the ottoman empire did not take Control of Silk road in 1453 that leaves B as your answer For a non-motivator for European exploration
Dropping the atomic bombs was a way of demonstrating America's power. Also, the Japanese refused to surrender after the first bomb was dropped on Hiroshima so the President was following through on his threat.
Hope this helps!!
The correct answer would be The National Party