This is the 807th most frequent Korean word.
시장을
"시장을" is the accusative form of "시장," meaning "market."
'시장을' marks the direct object 'market' of the verb 'visited' in the sentence.
나는 시장을 방문했어요.
I visited the market.
'시장을' is part of the phrase denoting the means 'through the market' in context of the activity.
그는 시장을 통해 물건을 사고팔아요.
He buys and sells goods through the market.
'시장을' refers to the object of preparation, implying readiness for the market event.