In the early modern period under the rule of kings Abdur Rahman Khan (1880–1901) and Habibullah Khan (1901–1919), a great deal of Afghan commerce was centrally controlled by the Afghan government. The Afghan monarchs were eager to develop the stature of government and the country's military capability, and so attempted to raise money by the imposition of state monopolies on the sale of commodities and high taxes. This slowed the long-term development of Afghanistan during that period. Western technologies and manufacturing methods were slowly introduced during these eras at the command of the Afghan ruler, but in general only according to the logistical requirements of the growing army. An emphasis was placed on the manufacture of weapons and other military material. This process was in the hands of a small number of Western experts invited to Kabul by the Afghan kings. Otherwise, it was not possible for outsiders, particularly westerners, to set up large-scale enterprises in Afghanistan during that period.