Think about all the conflict in the world middle east, Africa, Latin America, Asia. Is the cold war a modern war?

there has only been 12 presidents. the 12th president is/was moon jae-in

the steam engine.

the locomotive.

the telephone.

the telegraph.

the internal combustion engine.

the rifle.

ironclad ships.

electricity/light bulb.

after defeating german forces in north africa allied leaders turned their attention to "italy," since this was the location that made the most geographic sense before invading northern europe via france. 

you didn't list the options. however, a few communist countries today are: the people's republic of china, north korea, and cuba.