When was the Constitution written?

The Constitution of the United States was written in 1787 during the Philadelphia Convention, which took place from May to September of that year. This document established the framework for the federal government and is considered a cornerstone of American democracy.

The year 1776 marks the adoption of the Declaration of Independence, which announced the thirteen colonies' intention to separate from British rule, but it did not establish a governing document for the new nation. The year 1791 is significant because it is when the Bill of Rights, the first ten amendments to the Constitution, was ratified, adding further protections for individual liberties. The year 1865 is notable for the conclusion of the Civil War and the ratification of the 13th Amendment, which abolished slavery, but it is not related to the initial drafting of the Constitution itself. Thus, 1787 is the correct choice as it is the specific year when the foundational document of the United States was created.