I know that Crimea is ethnically Russian, politically pro-Russian and everyone there speaks Russian. So how did it become part of Ukraine in 1954?
This has been asked several times already and answered [here] (http://www.reddit.com/r/AskHistorians/comments/1z2w3q/why_did_khrushchev_give_crimea_to_ukraine_in_1954/).
For the record, while the Crimea has a large pro-Russian, Russophone majority, it's not true that "everyone there speaks Russian".