was the first successful colonial independence movement against a european power

Declaratory Act

Explanation:

The American Colonies Act 1766 (6 Geo 3 c 12), commonly known as the Declaratory Act, was an Act of the Parliament of Great Britain, which accompanied the repeal of the Stamp Act 1765 and the changing and lessening of the Sugar Act. Parliament repealed the Stamp Act because boycotts were hurting British trade and used the declaration to justify the repeal and save face. The declaration stated that the Parliament's authority was the same in America as in Britain and asserted Parliament's authority to pass laws that were binding on the American colonies.

References:

was authorised by section 1 of, and the First Schedule to, the Short Titles Act 1896. Due to the repeal of those provisions it is now authorised by section 19(2) of the Interpretation Act 1978.

"American Revolution: Prelude to Revolution". The History Place.

"Benjamin Franklin's Examination Before the House of Commons, 1766". Americana: Brief Inspirational Stories from American History. Archived from the original on March 11, 2009.

"Gale Encyclopedia of US History: 1766 Declaratory Act". Answers.com.

Richard Frothingham. The Rise of the Republic of the United States. Little, Brown,. p. 428.

Edwin Mims, Jr., The Majority of the People (New York: Modern Age Books, 1941), p. 71.

d.)   when the us left nato after the end of the cold war and they had to evolve to focus on more humanitarian measures with the smaller budget