Well sometimes you may not have access to a document that was made during the same time period as the historical subject that is being studied. Therefore, a secondary source would be better to use to understand more about subject you are studing.
Answer:
B conservative, hope that helps
Many native Americans were forced into labor on roads
On June 17, 1775, early in the Revolutionary War (1775-83), the British defeated the Americans at the Battle of Bunker Hill in Massachusetts. Despite their loss, the inexperienced colonial forces inflicted significant casualties against the enemy, and the battle provided them with an important confidence boost.