Final answer:
The Kingdom of Bohemia is now part of the modern-day Czech Republic.
Step-by-step explanation:
The Kingdom of Bohemia, which existed historically in Eastern Europe, is now part of the modern-day country of Czech Republic (option 1).
The Czech Republic and Slovakia were once a united country called Czechoslovakia, but they separated into two independent nations on January 1, 1993. Slovakia is known officially as the Slovak Republic.
Geography keywords: Kingdom of Bohemia, modern-day country, Czech Republic, Slovakia