Why do Totalitarian leaders restrict media and use propaganda?

The expansion of the railroad networks led to

What did the french national assembly decide? peasants would only have to pay one-tenth of their earnings to the catholic church. the government could not legally charge taxes without first holding a vote. aristocrats would still receive special privileges as long as they paid a higher tax. employment would be available to all people, regardless of their social class.

During the 1800s, an important pull factor for immigrants to the united states was