If you are talking about WW2, then Germany (due to British nightly bombings). And if you are talking about WW1, the France as it was where the stalemate in the Western front occurred
The correct answer is option D. "Companies replaced hand-operated brakes with air brakes on trains". The development of air brakes on trains was a significant improvement of railroad safety. Air brakes function much more faster than hand-operated brakes, because hand-operated brakes required that the brakemen turned the brakes in one car and jump to the next to set the brakes on, and so on.
Answer:
Pearl Harbor, 7 December 1941
On 7 December 1941, “a date which will live in infamy,” Japanese carrier-borne aircraft attacked the US Pacific fleet at its base at Pearl Harbor in the Hawaiian Islands.May 17, 2022
Includes event: Surrender of Japan
Combatants: United Kingdom
Him being shot could change their judgment