Why do rulers of china, myanmar/burma, and cuba censor internet use?

How did the construction of the erie canal improve transportation in the united states in the 1820s? a. the canal connected the great lakes to the mississippi river. b. the canal connected the great lakes to the ohio river. c. the canal connected the atlantic and pacific oceans. d. the canal connected the great lakes to the atlantic ocean.

How did the actions of tsar nicholas 2 and his wife lead to revolution in russia

What was the effect of the industrial revolution on the working class ?