I believe the answer is keynesian economists
Keynesians' view was heavily influenced by John Maynard Keynes, which advocated many forms of Government intervention in order to achieve full employment in society.
Things such as welfare, taxation increase,and housing assistance, are examples of Government intervention to allocate wealth from the rich to the poor
Nationalism was a great cause of World War one because of countries being greedy and not negotiating. Nationalism shows you are proud of your country and want it to be the best. A lot of causes all linked back to countries all wanted to be better than each other.
Answer:
Communism? I could be wrong