What ideas did Marx fail to consider that ultimately made the establishment of pure Communism highly unlikely

The first sophisticated taxes on citizens took place as a result of which of these?

Why did un coalition troops battle iraqi forces in 1991? iraq had invaded saudi arabia, along with its other border nations.iraq had invaded kuwait, which was a major source of the world's oil.the united nations wanted to remove saddam hussein from power.the united nations wanted to prevent the trade of illegal drugs.

Which of these rose during the great depression? a migration b consumerism c membership in the republican party d employment