Acomparison of germany and the united states during the nineteenth century would be an example of:

The answer is Exposition

Explanation:

An exposition is a practice of explaining something using elements such as texts, images, table content or a combination of that. A good example of exposition for this case, when you have to make a comparison between two countries, you have to first:

the median of the data is 4.

step-by-step explanation:

the median means the middle number of a given number.

to decide which one is the median, arrange in ascending or descending order. but sometimes, you may find two(2) number in the middle, but it's easy, just add them together and divide by 2.

so,   determine the median of the data. 2, 3, 3, 4, 5, 7, 9

it is already arranged, count 3 times forward and 3 backward and the one left is your answer.

2,3,3,4,5,7,9

our answer is 4.

hope this !