Answer:
Marxism
Explanation:
The Communist Manifesto inspired V.I. Lenin and the Bolsheviks toward revolution, The Communist Manifesto was written by Carl Marx, a Marxist.
Hitler physically invaded Austria, although he also had some support from within the country, from people who believed all Austrians should be Germans. The invasion was later made to look like a voluntary incorporation with the helped of a staged referendum.
The liberals did not want an elected parliament.
Diesel,coal,steam would be the answers