Which Cities on Map 22

Which cities on Map 22.1: European Cities of 100,000 or More, 1800-1900 contained one million or more people in 1900?

A) Madrid, London, Paris, Berlin, Vienna, and Moscow
B) Lisbon, Paris, Amsterdam, Copenhagen, Berlin, and Constantinople
C) Rome, Constantinople, Warsaw, Vienna, St. Petersburg, and Copenhagen
D) London, Paris, Berlin, Vienna, St. Petersburg, and Constantinople