I'm not sure if you made a typo or not but in the current context I can only see negligible being relevant.
C.
Article One of the United States Constitution establishes the legislative branch of the federal government, the United States Congress. ... Article One's Vesting Clause grants all federal legislative power to Congress and establishes that Congress consists of the House of Representatives and the Senate. - Wikipedia
Answer:
They didn't see it as imperialism, they genuinely believed others were "inferior", so I'd say national pride
Explanation:
what I just wrote
