Why does linux mint default to apache2?

Question

linux

And what happens if I take it down and install it, let's say nginx?

Answer 1

I would also like to know which representative of the zoo you are talking about (at the time of writing the answer about Mint there was no clarification): Nothing will happen.

Answer 2

Out of habit.
You don't need it, take it down.

Answer 3

And what happens if I take it down and install it, let's say nginx?

Mint will turn into fryahu.