Censorship can affect a free society by limiting the words and actions of people who wish to express themselves in certain ways. This restriction of freedom however is often necessary in order to preserve a functioning society.
Is it the US Canada border? I don't quite understand the question, sorry.<span />
They are a form of "budgeted capital" since the money is used for this has been set aside for this purpose
In general yes, the states honored their agreement since the Articles of Confederation demanded practically nothing from the states--meaning that it wasn't hard for the states to uphold their end of the bargain.