This is the 29th most frequent Dutch word.
mensen
"People"
Here, 'mensen' specifies a subset of humans, those in the city. It shows possession with 'de'.
De mensen in de stad genieten van de markt.
The people in the city enjoy the market.
In this usage, 'mensen' is a general reference to humanity over history.
Hij vertelde verhalen over hoe mensen door de geschiedenis heen hebben geleefd.
He told stories about how people have lived throughout history.
In this sentence, 'mensen' is used as the subject of the verb 'werken'. It refers to humans as a group working together.