Answer: To show colonial support for the document and the willingness to fight for independence.
Explanation: The Declaration of Independence and the American Revolution generally, contained the ideas of the Enlightenment. According to these ideas, and with the ideas and attitudes of the colonists, the Divine Providence they protect and represent, gives everyone the right to freedom, the right to confession of religion, the right to property, the right to freedom of movement, and not only to the chosen monarch and his loyal subjects. Thus, the colonists make their promise to protect this Providence by mutually protecting and supporting each other in the exercise of these rights, and have shown determination to gain independence from Britain in order to continue to live as free people.
The land that was included in the Louisiana Purchase was from the Mississippi River to the Rocky Mountains, and Louisiana to Montana. Land that was included is Arkansas, Oklahoma, Montana, Kansas, Iowa, and Nebraska, parts of
Minnesota and Louisiana west of Mississippi River, including New
Orleans, big parts of North and northeastern New Mexico, South Dakota,
northern Texas, some parts of Wyoming, Missouri, and Colorado.
This is because it was when the Allies were able to defeat the Axis powers, which gave hope to the Allies to fight stronger. Also, when they defeated Axis powers at that battle, they(ALLIES), now had vantage points on both sides of Germany; east(UK) and west (Russia).