One of the earliest sawmills was built in west Florida in the 1830s, and like other early Florida water-powered mills, it produced lumber from cedar and pine trees. By the end of the decade, lumber production had greatly increased, and timber processing had become much more efficient. Which statement best explains this change in production?

In my honest opinion , i’d say franklin d roosevelt was a president that impacted our nation , i say this because fdr is voted among top three best us presidents and he was the longest serving president by 3 terms , usually presidents only supposed to have two terms increments of 4 years , equivalent to 8 years total before election time. and he established the fdic , through the 1933 banking act and he established the us , social security system , during his presidency, and established a national minimum wage , through the fair labor standards act , fdr led the allied coalition to victory in wwii and he played a major role in the creation of the united nations.

They learned to make tools.  hope this !   mark me as brainiest!