4- What was the political organization of the Modern Age

The most important type of political system in the modern world is the nation-state. The world today is divided territorially into more than 190 countries, in each of which a national government claims to exercise sovereignty—or the power of final authority—and seeks to compel obedience to its will by its citizens

your answer will most likely be a.

the structure was most likely used for;

c. playing a ball game with stone hoops