The Democrats fought almost bitterly at times over a number of issues. the democrats fought bitterly over issues like slavery, tariff rates and banking policies. The democrats also fought over the issue of passing legislation for the creation of a number of jobs in the country. Hope this answer helps you.
D: by trying out policies that might later affect the entire nation
Your answer would be C since homeland defense is there to provide protection for the President with terrorism and dangerous crimes.