Russia dropped out of WW1 early and thus was not present at the Versailles Peace talks.
Answer:
Many people were unhappy with their governments.
Explanation:
The factor that made it easy for communism to spread in Eastern Europe is because "Many people were unhappy with their governments."
This is evident in the fact that after world war 1, Stalin used the power of propaganda through radio to popularize the defects of the governments in eastern Europe.
He also secretly recruit policemen to spread Communism in the region. A good example was how he recruited police forces that were unhappy with the government in Poland in 1939.
Ida B. Tarbell was an essential investigative journalist.
Besides being a journalist, Ida B. Tarbell was an American writer and a lecturer. She lived during the late 19th century and also during the oil boom. Furthermore, <u>she was one of the pioneers of investigative journalism and she mainly spent her life investigating about the oil industry</u> and advocating for world peace. One of her most famous works is <em>The History of the Standard Oil Company,</em> where she confrontates and exposes John Rockefeller's practices.