Which tool might be used to limit imports from cuba but maintain exports to cuba? embargo nafta sanctions restricted trade routes

The correct answer is "sanctions".

Sanctions are often seen as a preliminary measure from governments to restrain a certain country who has not aligned to international treaties or has had diplomatic tensions with them. These do not include leaving a complete treaty without effect but rather aiming at a certain part of that treaty, like restricting imports from a certain country until diplomatic relations normalize. This, however, does not affect exporting businesses, as they are able to regularly send their products to that particular country unless that particular country decides it will also block imports.

workers of lowell mills were greatly benefited for the waltham type of work which was more a paternalist kind, trying to protect the integrity of this little girls coming from small farmers and providing an adequate place of work, this in an effort to avoid the issues of bad place conditions and immorality that the people in bigger industrialized cities of great britain were experimenting.