Challenges that nobles, artisans, and clergy had to face. in medieval times?

Although the commercial activities of merchants gave rise to commercial cities and towns, these towns began to face unprecedented problems. These problems are similar to those faced by modern day urban cities; they included contagious disease, overcrowding and crime. Hope this helps. Have a nice day.

C.east asiais the answer.

A, i have to keep writing because the website doesn't allow me to post one lettered responses