Answer: The Invention of the timer gear on fighter aircraft, the monoplane and more advanced aircraft such as fighter and bombers. the tank, the submarine, the machine gun, the dreadnought, the semi-auto rifle, chemical weapons, and the sub-machine gun. The tank, the submarine, the machine gun, semi-auto rifle, and the sub-machine gun are all still used today.
Explanation:
Observing a day of rest one day a week
Answer:
The son of an American Civil War hero, MacArthur served as chief U.S. military adviser to the Philippines before World War II.
Explanation:
Well Central Goverment and Sub-disvisonal are almost the same.