Final answer:
A unanimous declaration indicates complete consensus among the authors, exemplified by the Declaration of Independence where all representatives of the thirteen colonies agreed on their right to independence from Britain.
Step-by-step explanation:
A unanimous declaration means that the writers are in complete agreement. In the historical context of the United States, the unanimous Declaration of the thirteen united States of America, commonly known as the Declaration of Independence, signified that all the representatives from the thirteen American colonies were in agreement in asserting their right to separate from British rule. The Declaration is famous for its democratic ideals, asserting that all men are created equal with rights to life, liberty, and the pursuit of happiness, and it underlines the right of the people to alter or abolish oppressive governments. Moreover, the Declaration contains a lengthy list of grievances against King George III and the British Parliament, justifying the colonies' decision to seek independence.