Unfinished business We've got some unfinished business to debate (= we however have something crucial that you explore). 1840s - British industrial energy harnessing technological improve and boosts cost-free trade and expense worldwide, reaching its peak in the 2nd half from the nineteenth century. This example is from Wikipedia and https://businessflightshop.co.uk/blog/things-to-check-when-buying-a-packaged-international-vacation/