Answer:
B. The alphabet
Explanation:
The Russian language is written with the Cyrillic script, which was developed in Medieval Bulgaria based on the Greek script used at the time in the Byzantine Empire. In fact, the name "Cyrillic" comes from the name of a Byzantine monk: Saint Cyrill.
The Cyrillic script is also used in Ukraine, Serbia, Bulgaria, and Belarus.
Between a parent and child
1 mm = 0.0001m
450 x 0.001 m = 0.45 meters
