What made you want to look up nettle tree? Please tell us where you read or heard it (including the quote, if possible).
The Federalist is an online magazine that covers politics, policy, culture, and religion. It was co-founded by Ben Domenech and Sean Davis; senior editors include David Harsanyi and Mollie Hemingway.
Federalism is a form of government in which power is divided between the national government and the state governments. In the United States, there is a federal court system. In addition, each state has its own courts.