What significant action did the Declaration of Independence take?

The Declaration of Independence is primarily significant for declaring the thirteen American colonies' independence from British rule. Drafted in 1776, this document articulated the colonies' grievances against King George III and asserted their right to self-governance. By formally announcing their independence, the document laid the groundwork for the creation of a new nation and its core principles, including the ideas of liberty and equality.

The other options, while important in American history, do not accurately describe the main action taken by the Declaration of Independence. The establishment of a new system of government occurred later with the Constitution, which was drafted in 1787. Similarly, the Bill of Rights, which comprises the first ten amendments to the Constitution, was introduced even later, in 1791. Thus, the document's key role was to sever legal ties with Great Britain, marking a crucial turning point in the quest for American self-determination.