In what year did Delaware become the first state to ratify the Constitution?

Delaware became the first state to ratify the Constitution in 1787, making it a significant moment in American history. This was shortly after the Constitutional Convention, which took place that same year in Philadelphia. On December 7, 1787, Delaware's ratifying convention convened and unanimously adopted the Constitution, highlighting its early commitment to the framework of government that would shape the United States.

The year 1787 is particularly important as it marks the beginning of the process by which the original states would agree to the Constitution, leading to its establishment as the supreme law of the land. This decisive action by Delaware set an important precedent, prompting other states to follow suit in the ratification process.

The other years listed do not represent the correct timeline for Delaware’s ratification. For instance, 1776 refers to the year the Declaration of Independence was adopted, while 1791 marks the year the Bill of Rights was ratified. The year 1789 is significant as it was the year the federal government under the new Constitution officially began operating. None of these years align with Delaware's early pivotal role in the ratification of the Constitution.