In your paper, please cover the following topics, and anything else that you might want to write about regarding Regressive, Proportional, and Progressive Income Taxes. 1. Define Regressive, Proportional, and Progressive Income Tax Systems 2. Please give an example of of the taxes that a single person who has $100,000 would pay under Regressive, Proportional, and Progressive Income Tax Systems. You can make up your own rates for the Regressive and Proportional Systems, but use the 2021 Federal Income Tax Rates for the Progressive Income Tax System. 3. What type of Income Tax System is operated in the United States? 4. What type of Income Tax System is operated in different countries around the world? Research, and document in your paper the income tax rates for a single person in three different countries of your choice.