I'm afraid I couldn't give you a complete answer, or the answer that you're looking for, for this question regarding the Native-born Americans in 1860's since there is no map provided with this question. Try re-posting this question with the map on it.
Answer:
The event in Boston helped to unite the colonies against Britain. What started as a minor fight became a turning point in the beginnings of the American Revolution. The Boston Massacre helped spark the colonists' desire for American independence, while the dead rioters became martyrs for liberty.
Explanation:
The cause of the Boston Massacre was the Boston colonists didn't like having British solders in their city so they starting throwing snowballs. ... The effect of the Boston Massacre was five people died. The cause of the Boston Tea Party was the colonists didn't want taxed tea.
The Boston Massacre had a major impact on relations between Britain and the American colonists. It further incensed colonists already weary of British rule and unfair taxation and roused them to fight for independence.
Hope Helps
