Why do you think the europeans would want to import african slaves instead of using native americans to work on plantation

Because native americans had the resources to fight back, and didn't have to cross seas to do so.

On april 20, 1814, the dethroned emperor left france for the isle of  elba, where he was exiled under the terms of the treaty of fontainebleau.napoleon  would be allowed to ruleelba, which had 12,000 inhabitants. perhaps cruelly, the treaty allowed him to retain the title "emperor."