To locate Moscow on a map, you can find it in the western part of Russia, situated along the Moskva River. It is the capital city of Russia and is known for landmarks such as the Kremlin and Red Square.
Regarding the event that led to Moscow becoming the capital of the Russian Empire in 1480, the correct answer is:
B. The Russians defeated the Mongol-Tatars in 1480.
This victory marked the end of Mongol dominance over Russia, allowing Moscow to emerge as a significant political and cultural center, eventually leading to its status as the capital of the Russian Empire.