Which is an example of a sphere of influence?
a nation is politically independent, but an imperial power controls its trade.
a nation is under complete political and cultural control of an imperial power.
a nation is protected by an imperial power in return for trade privileges.
a nation forms an alliance with an imperial power, and both reap benefits.

A nation is politically independent, but an imperial power controls its trade.

Explanation:

A sphere of influence or zone of influence is an area or region in which an organization or state exercises a certain kind of indirect cultural, economic, military or political domination. Also, in some inhabited places, it is spoken of area of influence to designate the space in which, for example, a trade or service has influence on localities or other zones different from which they are located.

1.the population change is near or at replacement level.

4. the birth and death rates are balanced.

6. sweden is most likely a developed country.

there has only been 12 presidents. the 12th president is/was moon jae-in