Which of the following reasons explains why hudson founded new york harbor?
he had navigated the area and knew of a waterway.
his men had threatened abandonment if he did not go further southward.
he had already explored the northern area and wanted to map the coast.
he was following the spanish treasure ships.

Hudson founded New York harbor because he had navigated the area and knew of a waterway.

Explanation:

In 1609, Hudson was chosen to sail through the Arctic Ocean around northern Russia to reach the Far East. On April 6, Hudson departed in the Half Moon, a ship of only 73 tons with a crew of eighteen to twenty men. They sailed from the island of Texel, on the Dutch coast of the North Sea and reached the North Cape, in Norway. After passing Spitsbergen, in view of the polar ice, the crew refused to go further and could not complete the planned route. Hudson convinced the crew to try to find the way to China through North America and headed to the West (Hudson had heard about that possibility from John Smith, which had been transmitted to him by the Native Americans, probably referring to what is known today as the Great Lakes).

He toured the North American coast and spotted the Delaware Bay a year before the English did, and on September 3 his ship entered the port of New York and shortly thereafter began to climb the Hudson River to see if it could find a way down that road. Although the first European that had seen the river was Giovanni da Verrazano in 1524, Hudson was the first to explore it properly.

c. the dred scott v. sandford case,