Complex sentence: In 1609, the region was first claimed by Henry Hudson for the Dutch, who built Fort Nassau in 1614 at the confluence of the Hudson and Mohawk rivers, where the present-day capital of Albany later developed.
Split into simpler sentences: In 1609, the region was first claimed by Henry Hudson for the Dutch. They built Fort Nassau in 1614 at the confluence of the Hudson and Mohawk rivers, where the present-day capital of Albany later developed.