Complex sentence: In the year of 1695, for instance, Levett's increasingly powerful trading firm accounted for 3,894,864 pounds of tobacco which they imported into England, and then subsequently re-exported some 1.3 million pounds to Holland, Germany and the Baltic.
Split into simpler sentences: In the year of 1695, Levett's increasingly powerful firm accounted for 3,894,864 pounds of tobacco imported into England. Of that, the firm subsequently re-exported some 1.3 million pounds to Holland, Germany and the Baltic.