What industry did politicians use to spread information about their own party and opponents?

Politicians use Newspapers to spread information about their own party and opponents.

Explanation:

Newspapers are a very important tool of political manipulation. Through this tool, political parties can disclose their strengths, qualities and any kind of relevant information to increase their influence.  Similarly, through newspapers, political parties can expose their opponents, showing scandals, negatives points, political errors, abuse of power, among other events that show that the population should not rely on politicians associated with that party.

question 10: the answer is c, to their constituents address a problem.

question 11: i think it would be domestic bills, which deal with american issues only and public bills, which affect the whole nation.