This article is about the specific polity United Colonies and therefore only includes events related to its territory and not to its possessions or colonies. If you are interested in the possession, this is the link to the article about the nation which includes all possessions as well as all the different incarnations of the nation.
If you are looking for the page with the statistics about this polity you can find it here:All Statistics
Was the name used by the Second Continental Congress for the emerging nation comprising the Thirteen Colonies in 1775 and 1776, before the independence of the United States of America was declared. It was already a factually independent polity.
Establishment
April 1775: The Battle of Lexington and Concord marked the beginning of the conflict between the United Colonies and British forces.
May 1775: Capture of Fort Ticonderoga.
May 1775: Battle of Crown Point.
May 1775: Battle of Chelsea Creek.
July 1775: Battle of Bunker Hill.
September 1775: Patriot militia seized Fort Johnson, the principal fortification overlooking the Charleston harbor.
September 1775: Continental Army troops led by Colonel Benedict Arnold sailed from Newburyport, Massachusetts to the mouth of the Kennebec River.
October 1775: American forces reached Norridgewock Falls, location of the last settlements on the Kennebec River.
October 1775: Two colonial battalions reached the Dead River.
October 1775: On October 18, Fort Chambly fell.
October 1775: The expedition of Colonel Benedict Arnold reached Lake Mégantic.
November 1775: Fort St. John is captured.
November 1775: General Richard Montgomery led his troops north and occupied Saint Paul's Island in the Saint Lawrence River.
November 1775: Montreal fell without any significant fighting.
December 1775: Battle of Quebec.
Chronology
Interactive Chronologies with maps are available in the section Changes Navigation
Was the war of independence of the United States of America (at the time the Thirteen Colonies) against Great Britain.
July 1776: United States Declaration of Independence: the Thirteen Colonies at war with the Kingdom of Great Britain regarded themselves as thirteen independent sovereign states, no longer under British rule.
1.1.Boston campaign
Was a military campaign by the United States Continetal Army mainly in the Province of Massachusetts Bay.
March 1776: Siege of Boston: British forces evacuate the town.
1.2.Invasion of Quebec (1775)
Was the unsuccesful invasion of the British Province of Quebec by the United States Continental Army.
May 1776: After a loose siege, the Americans withdrew from Quebec City.
June 1776: General William Thompson’s 2,000 Americans land near Trois-Rivières and advance inland.
1.2.1.Benedict Arnold's expedition to Quebec
Colonel Benedict Arnold led a force of 1,100 Continental Army troops on an expedition from Cambridge in the Province of Massachusetts Bay to the gates of Quebec City.
1.3.Southern theatre of the American Revolutionary War
Was the southern theater of war of the American Revolutionary War. It encompassed engagements primarily in Virginia, Georgia and South Carolina.
January 1776: Battle of Great Bridge.
1.3.1.Snow Campaign
Was a U.S. military campaign in Carolina during the American Revolutionary War.
1.4.New York and New Jersey campaign
Was a series of American Revolutionary War battles for control of the Port of New York and the state of New Jersey, fought between British forces under General Sir William Howe and the Continental Army under General George Washington.
1.4.1.American Counterattack in New York and New Yersey (American Revolutionary War)
Was the U.S. counterattack to the British invasion of New York and New Jersey during the American Revolutionary War.
January 1776: General Howe withdrew most of his army from New Jersey, only leaving outposts at New Brunswick and Perth Amboy.
Disestablishment
January 1776: Battle of Great Bridge.
January 1776: General Howe withdrew most of his army from New Jersey, only leaving outposts at New Brunswick and Perth Amboy.
March 1776: Siege of Boston: British forces evacuate the town.
May 1776: After a loose siege, the Americans withdrew from Quebec City.
June 1776: General William Thompson’s 2,000 Americans land near Trois-Rivières and advance inland.
July 1776: United States Declaration of Independence: the Thirteen Colonies at war with the Kingdom of Great Britain regarded themselves as thirteen independent sovereign states, no longer under British rule.
Selected Sources
Declaration of Independence of the United States of America, https://www.archives.gov/founding-docs/declaration-transcript
Fredriksen, J.C. (2010): Chronology of American Military History - Volume 1, Facts On File, p.20
Fredriksen, J.C. (2010): Chronology of American Military History - Volume 1, Facts On File, p.21
Fredriksen, J.C. (2010): Chronology of American Military History - Volume 1, Facts On File, p.22
Fredriksen, J.C. (2010): Chronology of American Military History - Volume 1, Facts On File, p.26
Fredriksen, J.C. (2010): Chronology of American Military History - Volume 1, Facts On File, p.32
Fredriksen, J.C. (2010): Chronology of American Military History - Volume 1, Facts On File, p.36
Fredriksen, J.C. (2010): Chronology of American Military History - Volume 1, Facts On File, p.38
Fredriksen, J.C. (2010): Chronology of American Military History - Volume 1, Facts On File, p.6
Frothingham, R. (1903): History of the Siege of Boston, and of the Battles of Lexington, Concord, and Bunker Hill: also an Account of the Bunker Hill Monument. Little, Brown, & Company, pp. 100-101