Besides mills, what were other important elements of the industrial planning at lowell?

By 1840, the factories in Lowell employed at some estimates more than 8,000 textile workers, commonly known as mill girls or factory girls. These "operatives"—so-called because they operated the looms and other machinery—were primarily women and children from farming backgrounds.

Explanation:

“a committee reviews the bill and marks it up to make it more viable and to reflect interests