Watt introduced a design enhancement, the separate condenser, which avoided this waste of energy and radically improved the power, efficiency, and cost-effectiveness of steam engines. Eventually he adapted his engine to produce rotary motion, greatly broadening its use beyond pumping water.
He should consult an archaeologist. They study ancient studies looking for remains of buildings, objects, people, etc. They learn a lot about our past and what our ancestors were like through archaeology.
I would say Washington DC because the White House was burned down