What makes people develop crushes in professional or educational environments?

Do you agree that economic and inflation uncertainty created by President Donald Trump’s tariffs — both implemented and threatened — are largely to blame for terrible declines in the stock market?
The gum in the back of my mouth is swollen and feels tender since yesterday. I have had my wisdom teeth removed two years ago. The tooth right next to the swelling also looks fine. What’s going on? (See pic in comments).