Answer:
turn trees into lumber.
Step-by-step explanation:
In the late 1800s, Washington's sawmills made it easier to turn trees into lumber.
In the 18th century, wood was one of the main raw materials of the economy in Britain. Power driven tools like the frame saw helped convert felled trees to lumber and they were powered by either water or wind power.
This tool was important in sustaining the economy of Britain at that time.