Why do writers break their writing into paragraphs?

This is an acadamical question why does juelz get bit by an alligator and why was arthur the only one who in the middle chapter in the book

Both adam smith and ayn rand would agree th o individuals and businesses want what benefits them the most. society benefits when people want what is best for everyone. individuals become wealthy because of actions by the government. society benefits when individuals agree to sacrifice to others. c

American history (is, are) studying the american colonies.