What else did the settlers in delaware colony do to make or earn a living?

Delaware was a rich colony. People in here mostly profited from agriculture, and they were producing cash crops, wheat, rye, and also farmed lots of pigs and cows, and they were selling the products both in the United States and in Western Europe.

But people in Delaware were profiting from something else as well, and that was the iron ore. Delaware was very rich in iron ore deposits, especially around the rivers. People used this ore, and they started producing multiple types of tools, nails, and gun parts, and they managed to increase their profits even more.