Nationalism is an ideology which affects social, political and economic political systems. It is based on the protection of sovereignty of the country and maintaining a national identity free of foreign intervention. It defends and promotes national interest over foreign relations.
Imperialism is an ideology or practice that promotes expansion and dominion over other countries, aquiring new territories and colonies, and exercising control over them.
For example, during World War II, the Japanese government promoted a nationalistic ideology amongst the people to create unity against foreign invasion and colonization. Fear was used to generate nationalism, because they acted in response to foreign threats. Nationalism affects Imperialism because it reinforces the idea of one country being better than the other. Fear of external intervention leads to the idea the "offence is the best defense": in order to protect our nation, we have to expand our territory. It can be said that nationalism becomes an excuse for imperialism.
Respect and obey federal, state, and local laws. Respect the rights, beliefs, and opinions of others. Pay income and other taxes honestly, and on time, to federal, state, and local authorities. Defend the country if the need should arise.
Hoover felt that government should take a very off-hands approach, and the government should be akin to a guide letting their leashed dog choose the path; however, FDR believed in a very hands on and big government approach, and he advocated for expanding the role of the government unlike Hoover.