In 1905 representatives of 43 groups who opposed the policies of American Federation of Labour, formed the radical labour organisation, the Industrial Workers of the World (IWW). The IWW's goal was to promote worker solidarity in the revolutionary struggle to overthrow the employing class.
They wanted to reform the Church of England, but England wouldn't let them do that so they sailed for North America to make their own church.
Answer: The federal government and the majority of states have income taxes, but their rules and rates can vary widely. Federal taxes are progressive, with higher rates of tax on higher levels of income. Some states have a progressive tax system, while others impose a flat tax rate on all income.
When people are united by common history and culture, they belong to a "nation" although this is not technically the case. Many people from different backgrounds and cultures can be part of a nation.