Seattle is a place, so it is a noun.
Chief Seattle begins his speech with a reference to President Franklin Pierce to show respect and acknowledge the authority of the government with whom he is negotiating. This establishes a diplomatic tone and sets the stage for the message he is about to convey regarding the relationship between Native Americans and the land.
part of speech
The part of speech for this particular word is a noun.
The part of speech for "answer" is a noun.
adverb
what part of speech is beneath
The part of speech for "explicit" is an adjective.
The part of speech for "twirl" is a verb.
The part of speech for "unfamiliar" is an adjective.
The part of speech of "came" is a verb.
The part of speech for "lecturer" is a noun.
The part of speech for "indefinite" is an adjective.