Tell me somethings that people did not have back then and have now?

The soviet union and the united states believed in two very different economic systems. what were the names of each?

The system of checks and balances was designed for what purpose? fear of strong state power to keep power out of one branch to appease the southern states to allow the judicial branch to have equal power

The soldiers in the novel use the phrase "it all looked good on paper" several times throughout their experiences. what does this mean in the context of the war?