The First Amendment places limits on government power to restrict freedom of speech in the United States "to protect the people and country." If we did not have such restrictions certain speech such as hate speeches would be allowed and then another right and law would be violated, that would be not to be discriminated against for race, sex, sexual orientation, age, disability, vertan status, marital status, etc.
For 4, I’d say the best answer to that would be tradition.
There is no law or amendment set in place that designates the Capitol as the place where inaugurations are to be held.
Since some of the frontier colonies during this time were free due to the idea of popular sovereignty, some slaves could successfully escape to "free" states and not be forced to return to their home state.
On June 28, 1914, in an event that is widely regarded as sparking the outbreak of World War I, Archduke Franz Ferdinand, heir to the Austro-Hungarian empire, was shot to death with his wife by Bosnian Serb Gavrilo Princip in Sarajevo, Bosnia.
Organizing and managing campaigns for state offices<span>
assisting in local campaigns
</span>
organizing state conventions<span>
raising money</span>