What role did alliances play in starting world war 1?

the alliances made it where if on country in one alliance started fighting with another country in a different alliance those alliances made it where the to alliances are now at war instead of two countries

Explanation:

i think it’s will be a yes

i do not believe this was true indefiantly the native americans would have lsot aganist america one they didndt have the resources and allies that america had and 2   indians werent as advanced at the time as they were not 3 americans had the expreince because some of the soliders from other wars fought in that war and were attecked etc