Final answer:
The spelling error of 'Pensylvania' is found in the U.S. Constitution, which was the document that emerged from the Philadelphia Convention in 1787 to create a new system of governance, replacing the Articles of Confederation and later including the Bill of Rights.
Step-by-step explanation:
The spelling error of “Pensylvania” is found in the U.S. Constitution. After much debate and compromise during the Constitutional Convention, which took place in Philadelphia over the summer of 1787, the delegates created a new blueprint for the nation. Among the signing delegates was Benjamin Franklin from Pennsylvania, whose state name was notably misspelled. This document replaced the ineffective Articles of Confederation with a new system of government that provided a balance of power between the national government and the states, aiming to create a “more perfect union” as stated in the preamble. The Constitution became the guiding framework for American governance, with the first ten amendments, known as the Bill of Rights, being added shortly after to address the lack of a bill of rights during the ratification debates.