Answer:
Because these two battles sparkled the Revolution and made it clear that there is no turning back to the old system.
Step-by-step explanation:
These two battles weren't the most important ones, weren't even the ones with the higher number of casualties, but they showed that colonists will no more accept to be humiliated by the British authorities.
This were the shots that were heard around the world, as it was written and the shots that started the American revolution.