From the year of 1865 to the year of 1937
Answer:
he is saying that the atomic bomb could break world balance an the atomic bomb will lead to the world being destroyed it shocked their view because of how deadly it was
The synchronization mechanism.
I believe that's the term you're looking for. The synchronization gear was also known as a gun synchronizer, or sometimes has been referred to as an "interrupter," although that term doesn't really describe it's function accurately. Essentially, the mechanism synchronized the timing of the airplane propeller and the firing speed of the gun so that the bullets would be flying through the space between the propeller blades as they spun.
