The enemies of Rome were The Barbaricum.
Final Answer: What happened in Rome 161 AD when first enemies called The Barbaricum attack the Roman Empire
"containment", because the U.S wanted to contain communism and didn't want it to spread.
Answer:
in an urban area Migration results in a more dense population
less job availabilities
less housing
easy transportation
I'm rural areas migration can result in
more spacious area
poor transportation
less gorvernment facilities/infrastructure
harder labour
do I need to explain more because I think these are just examples