Answer:
There is no short answer.
Explanation:
Cuisines and people's food choices around the world are affected by all sorts of changes. This can be through immigration and living together with people from different cultural backgrounds. It can be through entertainment, tv shows and movies can affect trends and food choices. It can even be through war.
The fact that salsa has become the most popular condiment sold within the last decade can be because of one or all of these reasons.
I hope this answer helps.
