(CNN)-- Preliminary results from a U.S. military laboratory show that remains exhumed outside the Russian city of Yekaterinburg in 2007 belong to two children of Russia's last czar, Nicholas II ...

The Romanov family ruled Russia from 1613 to 1917 ... which continued through Alexander III and Nicholas II, the last tsar. Alexander III (ruled 1881 Ü 1894) began a web of railroads that ...