Organized crime in Italy was created in 180#.

"Organized Crime" is a blanket term that does not refer to any one particular crime.

Planning a Crime and Committing the crime

This is an opionion question and is not allowed on WikiAnswers, but I will answer it in my opinion.

A gang is a formed group. Forming a group is an organized act. Also any crime which is done in concert (that is, with the assistance of another or more persons) is also an organized crime. So if you commit a crime on behalf of a gang, it is an organized crime.

Yes. Both New Orleans and Florida have notorious organized crime families.