What led to the battle of bunker hill?

a. members of the boston militia dumped tea into boston harbor.
b. colonists began to launch protests against the quartering act.
c. the boston massacre created tense unrest throughout the colonies.
d. the british spotted fortifications by militiamen on breed’s hill.

i want to say c?

alliances in ww1 were different from ww2 because the entente in ww1 made up of serbia,russia,france,britan,japan and italy later america  and all allied in a sort of balance of power and too keep germany,austria-hungary,and the ottomans down. russia allied the serbians in order to exert its influence in the balkans while france allied the russians because france was still in dismay and insulted after the defeat to the germans during the unification of germany and britian allied the belgians after the germans invasion of belgium.in ww2 the alliances were in a preemptive attempt to deter any further wars into happening while germany and italy allied since they were insulted and humiliated after the previous war while also sharing a similar ideology of facsim along with japan which all 3 had a want for world domination and agreed to assist one another in the endevours 

explanation:

lots of people lost money in both

health and medicine because people are dying from not being healthy or not strong enough medicine

small european communities with shared traditions consolidated into large new states (apex)