Answer:
Direct causality can be drawn between nationalism and war. Nationalist groups within a state who desire their own independent state, may conduct regular or irregular warfare in order to forcibly persuade a state to grant them independence.
The best answer is "<span>been steadily increasing" - since 2000, the financial crisis has taken its tool and more and more people are living in poverty. A big part of the phenomenon are poor neighbourhoods - the number of people living in poor neighbourhoods has increased by around 5 million people since 200. </span>
"Red Army" is slang, I believe
World war 2 officially started in 1939