What did the Dutch build in New Amsterdam?
The Dutch traded along the Hudson River as early as 1611 and established Fort Amsterdam on the southern tip of Manhattan island in 1625.
How did the Dutch treat the natives?
Regarding the Indians, the Dutch generally followed a policy of live and let live: they did not force assimilation or religious conversion on the Indians. Both in Europe and in North America, the Dutch had little interest in forcing conformity on religious, political, and racial minorities.
Why did the Dutch leave New York?
England and the Dutch Republic both wanted to establish dominance over shipping routes between Europe and the rest of the world. The Anglo-Dutch Wars were how they settled this disagreement. Think of these conflicts as international trade disputes — in which each side had a big navy and wasn’t afraid to use it.