CENTRAL ASIA
iv. In the Islamic period up to the Mongols.
v. In the Mongol and Timurid periods.
vi. In the 16th-18th centuries.
viii. Relations with Persia in the 19th century.
x. Economy before the Timurids.
xi. Economy from the Timurids until the 18th century.
xii. Economy in the 19th-20th centuries.
xiv. Turkish-Iranian language contacts.
(See also Archaeology v, vii; Architecture iv; Art in Iran vi, viii.)