Which statement BEST describes the alliance systems in the years leading up to World War 1?

in an alliance system a local conflict could easily turn into a big one one country would get into a conflict and its ally would jump in defending them for example russia and Serbia had an alliance Russia would protect Serbia from Austria Hungary

Hope this helps:)

worcester v. georgia, legal case in which the u.s. supreme court on march 3, 1832, held (5–1) that the states did not have the right to impose regulations on native american land. andrew jackson refused to enforce the ruling, the decision form the basis for most subsequent indian law in the united states.

i think the answer is a and i hope this ; ))