全国重点文物保护单位数量达到40家的23个市（地级市+直辖市）

When you guess a country, all the countries it borders will also be completed. Can you fill in the world map in just 90 seconds?

When you guess a state, all the states it borders will also be completed.

Drag the flag onto the correct country. Careful, though! One wrong move and the game ends.

Among these first names, click the ones where the average person in the U.S. with that name is at least 50 years old.