Congress powers are limited by the constitution the supreme court public opinion all of the above

constitution, not sure about the others.

the triple alliance. germany and austria-hungary were already allies by 1879 when, worried about a threat from russia, they formed the dual alliance. italy joined the group in 1882. there was a concern about a possible attack from france and the alliance needed powerful friends to defend it.

the exclusive possession or control of the supply or trade in a commodity or service.