In What Way Was Nineteenth-Century Russian Imperialism Different from That

In what way was nineteenth-century Russian imperialism different from that of other European countries?

A) Russia colonized territories for only a brief time before granting the colonies independence.
B) Russia added no territory to its rule at all during the nineteenth century.
C) In the nineteenth century, Russia's only colonies were in North America.
D) Russia championed a policy of only annexing lands bordering itself; it had no overseas colonies.
E) Russia focused its imperial policy on acquiring land in eastern Europe by conquest beginning with the Crimean War.