Why did small towns and cities begin to pop up? Group of answer choices? if you don't know don't answer

A. Settlers wanted the lifestyle of a city and wanted nothing to do with farms.

B. People settled where they could sell goods or offer services to settlers on farms.

C. Over the years, people lost the skills required to farm and had to find other jobs to do.

D. Every last piece of farmland was taken, so towns and cities were the only choices.

10 points per question and brainlist 1. name four of the ruling dynasties of china. describe at least three contributions to society from each dynasty. 2. why did the qin ruler zheng burn chinese literature and philosophy books? how did the han dynasty establish a strong and effective government? why did people rebel against the sui rule? 3. what new technologies were invented during the tang dynasty and fully developed in the song dynasty that would eventually have a great impact on the world? explain why this technology had such an impact. 4. who were the invaders that seized control and took over the song dynasty? 5. how was china's history affected by its policies of isolation from the outside world during the ming dynasty?