Final answer:
False. The principles of life, liberty, and the pursuit of happiness were not immediately available to all Americans.
Step-by-step explanation:
False. The principles of life, liberty, and the pursuit of happiness were not immediately available to all Americans. Although the Declaration of Independence, written in 1776, proclaimed that all men are created equal and endowed with certain unalienable rights including life, liberty, and the pursuit of happiness, it did not guarantee immediate access to these rights for all Americans. At that time, the institution of slavery still existed, denying freedom and rights to enslaved African Americans. Additionally, women and Native Americans also faced limitations on their rights and liberties. It took several years and ongoing struggles for these principles to be more widely implemented for all Americans.