In general, do you feel that racism and sexism involve similar ways of thinking, or that
these problems are largely unrelated to each
other?

yeah they are unrelated

Explanation:

racism deals with ethics groups etc

but sexism deals with girls especially

"choosing is refusing" means individuals face an opportunity cost with each decision they make. economists state that every decision involves trade-offs. opportunity cost is the least desirable alternative given up as a result of a decision.

hello,

answer: a federal government has final authority on interstate/inter provincial  and international affairs, a confederation is one where the central/national government or authority is governing body what does not have final say over the same matters. hopefully this and i will try again if you don't like this answer : )

best of luck!