The answer is "cocktail party phenomenon".
Cocktail party effect refers to a noteworthy and overlooked capacity to tune your consideration regarding only one voice from a huge number. At a gathering when exhausted with current conversational accomplice and for the impulsive busybody, enabling the aural regard for meander around the room is a helpful trap.
King George III issued a proclamation<span> that forbade colonial settlement west of the Appalachian Mountains. In so doing, he hoped to placate Native </span>Americans<span> who had sided against him </span>during the<span> recently concluded Seven Years' War.
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Answer:
Theodore Roosevelt
Explanation:
He was an environmentalist and helped establish the US National Parks.