Answer:
I think because ww1 has guns and the wars before does not have any I think
Explanation:
Hope it helps
The Federal Bureau of Investigation (FBI) is a kind of United States Federal Police, a government agency that has the role of supporting the law by investigating violations of federal criminal law. However, contrary to what some think, the FBI is not a national police department, but a different jurisdiction for certain types of crimes, administered by the United States Attorney General. Created on July 26, 1908 by the public prosecutor Charles Joseph Bonaparte, the FBI is considered the largest police agency in the world, with thirty thousand employees and operating in sixty countries.
NSA (National Security Agency) is the largest cryptology data body in the world. It is located in the state of Maryland, in the northeast region of the United States, being responsible for the security of the country and for the use of a system called Signals Intelligence (SIGINT), which is capable of obtaining interceptions and cryptanalysis of data through signals from the whole world.
On his journey to the west and back he had brought stories of the great Roman Empire.