The battle of bunker hill was important because it

Despite their loss, the inexperienced colonial forces inflicted significant casualties against the enemy, and the battle provided them with an important confidence boost during the Siege of Boston (April 1775-March 1776).

Explanation:

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The Battle of Bunker Hill was the first major battle of the revolution. Though the British won, the Americans showed they would still fight back against British forces

the structure was most likely used for;

c. playing a ball game with stone hoops