I need a thesis statement on the crimes of prohibition era

No one can write this but you. Your thesis statement must include factual information plus your position/opinion/stance. Without your position on the topic, it isn't a true thesis statement. So think of this sentence as the angle you want to take on the topic and what you intend to prove by the end of your paper. (If your statement is simply factual, then there's nothing to prove!)

http://blog.eduify.com/index.php/2009/06/21/5-tips-on-how-to-write-a-strong-thesis-statement/
Read carefully and follow ALL directions.

http://leo.stcloudstate.edu/acadwrite/thesistatement.html
This is one of the very best places I've seen online to help students write good thesis statements. It shows you sentences that aren't thesis statements and how to turn each one into real thesis statements.

What do you want to say about these crimes?

http://leo.stcloudstate.edu/acadwrite/thesistatement.html

how the organized crimes expanded and the importance of it

To create a thesis statement on the crimes of the Prohibition era, it is important to first understand the significance of Prohibition and the illegal activities associated with it. Prohibition, which lasted in the United States from 1920 to 1933, was a nationwide constitutional ban on the production, sale, and transportation of alcoholic beverages. This controversial policy gave rise to numerous criminal activities and had a profound impact on society.

Here's a possible thesis statement:

"The Prohibition era not only failed to eliminate the consumption of alcoholic beverages but also led to a significant increase in organized crime, corruption, and violence, as bootlegging, speakeasies, and the black market emerged as lucrative illicit enterprises."

To support this thesis statement, one can look into various factors and events during the Prohibition era. These may include the rise of notorious gangsters like Al Capone, who gained power and wealth through illegal alcohol trade, the growth of underground establishments known as speakeasies, the surge in alcohol-related crimes such as smuggling and bootlegging, and the corruption of law enforcement officials involved in the illicit alcohol trade.

When developing your thesis statement, it is crucial to consider the evidence and resources that provide information about the crimes and their impact during the Prohibition era. In this case, you could analyze historical sources such as books, academic articles, court records, and newspaper archives from the 1920s and early 1930s. Additionally, you may want to consult reputable online resources, libraries, or academic databases to gather relevant information and facts that support your thesis statement.