Twain is using a satire exposing imperialism as revealed in the Boxer uprising and its aftermath, the Boer war and the philippines American war
More railroads lead to lesser land for crop cultivation and raising of livestock! hence, farmers are unable to earn profit from their activities.
That would be D.The Warsaw Pact. The Warsaw Pact was a treaty undertaken by the Soviet Union and her sister communist countries in Europe, the Middle East and Asian in which the Soviet Union used to strengthen the hold of communism on the countries in the Warsaw Pact.
