Morris joined the resistance against the Stamp Act (1765), an effort by Parliament to extract tax revenue from the American colonies. He supported the Non-importation Resolutions, affirming that American merchants would stop importing goods from England until the Stamp Act was repealed.
On December 30, 1786, the Pennsylvania Assembly named him as a delegate to the Constitutional Convention. Although he faithfully attended all the meetings, he didn�t participate much in the debates. He supported ratification of the Constitution and served a term as U.S. Senator from Pennsylvania.
He used his shipping fortune to buy land throughout the Union, and by 1795 he had acquired over 6 million acres. His aim was to promote the development of farms and towns, but European wars reduced the flow of immigrants, and settlement proceeded more slowly than he had expected. The mortgages and taxes were more than he could pay. Creditors had him arrested, and he was sentenced to Philadelphia debtor�s prison from 1798 to 1801. Humiliated and broke, he died on May 7, 1806. It was a sad end for the practical man who had done so much to help America achieve independence.
In December 1776, Americans were discouraged by defeats, and Paine wrote a stirring essay. George Washington read to his men on Christmas. This inspired them to win a much-needed battle victory against British forces in Trenton. Paine wrote more essays which became The American Crisis. The second essay coined the term "United States of America."