President Vladimir Putin has claimed that Crimea is officially a part of Russia after he signed a treaty.
The people of Crimea choose in a democratic referendum to join Russia. United States had tried to stop Russia.
No, the Crimean Peninsula (Crimea, "Krym" in Russian) is on the north shore of the Black Sea and now part of the Ukraine. Until the break up of the Soviet Union in the early 1990s, the Crimea was part of "Russia" (either the Soviet Union or the tsarist Russian Empire). It was taken by Russia during 18th-century wars with the Turks, at which time the population was "Crimean Tatars" who were essentially Turkish.
Ivy Bethune was born on June 1, 1918, in Sevastopol, Russia [now Crimea, Ukraine].
Nikolay Trofimov was born on January 21, 1920, in Sevastopol, Taurida Governorate, Russia [now Crimea, Ukraine].
Nina Vyroubova was born on June 4, 1921, in Gurzuf, Taurida Governorate, Russia [now Crimea, Ukraine].
Aleksandr Khmelik was born on September 7, 1925, in Alupka, Crimea province, Soviet Union [now Russia].
Yes, Siberia used to be ruled by the Mongols.
The Crimean War took place between France and Britain on one side and Russia on the other, and was fought over who had control of Christian holy places in Palestine (then ruled by the Ottomans, who are now called Turks). The Crimea is an area which used to be an area of Russia in the Black Sea, but is now part of Ukraine, where the main battles were those of Baklava, Alma, Inkerman and Sevastopol, and also in the Ottoman Empire, where the main battles were at Sinop, Istanbul and Varna, which are now located in modern day Turkey and Bulgaria.
Moldavia is not part of Russia, it is a geographic and historical region in Eastern Europe. Western Moldavia is presently part of Romania, the Eastern part is now the Republic of Moldova and the northern and south-eastern parts are now parts of Ukraine.
She was born in Prussia (now part of Germany) and married the crown prince of Russia. In Russia, she mostly lived in and around St. Petersburg, at the eastern end of the Baltic Sea.
The word "Soviets" disappeared together with the Soviet Union (then also called the USSR) in the Nineties. We now talk about Russia and Russians. The Russians did not take over Ukraine; they took over one part of it, called the Crimea, a peninsula in the Black Sea that had been part of Russia until a few decades ago. Russia had a simple reason for annexing (basically: taking back) the Crimea: Russia's Black Sea fleet is stationed there, and Putin did not want to risk ever being cut off from his own fleet. And that became a serious risk as the Ukrainians became ever more anti-Russian. In Ukraine itself Russia has not taken over any areas. It just 'supports' the Russian majority living in the east of it who want autonomy. It is a well-known Russian tactic also applied in the case in the case of the (formerly Russian) Republic of Georgia. It serves to weaken and destabilize countries in Russia's back yard if they threaten to become too much pro-Western.