Yes, you are correct! The seminal document written by Thomas Jefferson in 1776, following a year of war between American colonists and Great Britain, is indeed the Declaration of Independence. This document declared the Thirteen Colonies of America as independent states and listed the reasons for their separation from British rule. It is considered a crucial milestone in American history and is a symbol of freedom and democracy. To find this answer, you can usually rely on historical knowledge or search online resources about key documents in American history.