The phrase which explains what was significant about the Declaration of Independence was that it set up a government system without any leaders. This was sort of a system of emancipation from the British government for the thirteen colonies and this document essentially made the United States free from the rule of the British monarchy.
Two of the expected demands made by the Treaty of Versailles towards Germany are 1. Germany had to take sole responsibility for the war and 2. Germany had to lose much of its industrial areas.