Answer:
O Airplanes
Explanation:
Airplanes provided the most significant surveillance of the enemy land forces because through aeroplane we can see all the activities carried out by enemies against us. There are certain devices and instruments which can be installed on the aeroplane in order to collect data about the surveillance of the enemy land forces when the airplanes passes over the area of the enemies.
He served from 1789 till 1797
A developed nation needs a central government. A military. A embassy. Some form of centralized currency. And has to be a democracy
And a undeveloped country has to be relying on a other country. Has to get a good amount of money from a charity. Has to have a undeveloped military. It inst a full democracy. And it is reliability poor to other countries.
