Completed the following sentence: In 1799, after spending the winter at the academy of mines in Freiberg, Aall returned to Norway. <unk> <unk> <unk> <unk> <unk> <unk> <unk> <unk> <unk> <unk> <unk> <unk> <unk> <unk> <unk> <unk> <unk> <unk> <unk> <unk> <unk> <unk> <unk>
English Wars in 1801.<unk> English Wars in 1801. However, the business persevered.<unk> However, the business persevered.