Rome and Egypt were not direct adversaries. Egypt was absorbed into the Roman Empire after it helped Marc Antouny in the civil war against Octavian.
In Scandinavia, against each other. And in Britain.
In World War II, they didn't fight against each other, they were on the same side.
yes, many times
the sumerians fought against each other because they were fighting for farmland.
I don't think they ever fought three wars against each other. The only Rome/Egypt war I can recall is Caesar's Alexandrian War. Egypt was very willing to compromise with Rome because they knew that Rome could step in and conquer them if they chose. Are you sure you are not thinking of the Punic wars between Rome and Carthage?
Civil War
Each other, Irish, Picts, Romans, Germans.
Yes
Occasionally different Chinook groups would fight wars against each other, or against other Northwest Coastal tribes.
No. They did fight against each other in WW2 though.
So the countries had more power to fight against each other
Occasionally different Chinook groups would fight wars against each other, or against other Northwest Coastal tribes.