Original sentence: Bryan Haig, who has characterized Maddison's figures for 19th century Australia as "inaccurate and irrelevant.Maddison' assumptions have been criticized and admired by academics and journalists
Edited sentence: As a result, there is a lack of inclusion of various empires in the pre-1500 lists which crossed regional boundaries, such as the Arab and Mongol empires.For example, India refers mainly to the Indian subcontinent, as the current country existed as various kingdoms for most of its history.Maddison' assumptions have been criticized by, among others,  Bryan Haig, who has characterized Maddison's figures for 19th century Australia as "inaccurate and irrelevant