Answer:
Nationalism led to major conflicts following World War I, especially when: in 1915
Death in the population due to the fact they are not in their natural habitat. They would eat themselves out of house and home
Technology has improved, we got video games, arcade halls, more to do with phones and computers, so that means thst advertisers could advertise their stuff on computers.
(I dunno I guess that's the only connection I saw...)
I think it has to be banking
It is history abraham lincon
