Question: Fort Pickering is a 17th-century historic fort site on Winter Island in Salem, Massachusetts, it served as a fortification from which series of conflicts fought, on one side, by the Dutch States (the Dutch Republic, later the Batavian Republic) and, on the other side, first by England (the Commonwealth of England and then the Kingdom of England), and later by the Kingdom of Great Britain/the United Kingdom of Great Britain and Ireland?

Context articles: Action of 22 August 1795
Invasion of the Cape Colony
Oranienstein Letters
Governance of England
Jacob Abraham de Mist
Winter Island
Anglo-Dutch Wars
Convention of Alkmaar
Invasion of Ceylon (1795)
Fort Pickering

The Action of 22 August 1795 was a minor naval engagement during the French Revolutionary Wars between a squadron of four British Royal Navy frigates and two frigates and a cutter from the Navy of the Batavian Republic.
 The engagement was fought off the Norwegian coastal island of Eigerøya, then in Danish Norway, the opposing forces engaged in protecting their respective countries' trade routes to the Baltic Sea.
 War between Britain and the Batavian Republic began, undeclared, in the spring of 1795 after the Admiralty ordered British warships to intercept Batavian shipping following the conquest of the Dutch Republic by the French Republic in January 1795.
The Invasion of the Cape Colony was a British military expedition launched in 1795 against the Dutch Cape Colony at the Cape of Good Hope, the southern tip of Southern Africa.
 The Dutch colony at the Cape, established in the seventeenth century, was at the time the only viable South African port for ships making the journey from Europe to the European colonies in the East Indies.
 It therefore held vital strategic importance, although it was otherwise economically insignificant.
 In the winter of 1794, during the French Revolutionary Wars, French troops entered the Dutch Republic, which was reformed into the Batavian Republic.
 In response, Great Britain launched operations against the Dutch Empire to use its facilities against the French Navy.
The Oranienstein Letters are a series of letters sent by William V, Prince of Orange in December 1801 from Schloss Oranienstein near Diez, Germany.
 William addressed them to 15 Orangist ex-regenten of the old Dutch Republic, whom he advised to no longer stay out of government.
 This meant that some of his instructions given in the Kew Letters, that urged resistance against the French–Batavian invasion, were no longer in effect.
 He and his son, William Frederick, also recognised the Batavian Republic as legitimate, and renounced their hereditary stadtholderate.
 These were preconditions set by First Consul Napoleon of the French Republic for compensation for the loss of their possessions in the Netherlands, that had been confiscated by the Batavian Republic.
There has not been a government of England since 1707 when the Kingdom of England ceased to exist as a sovereign state, as it merged with the Kingdom of Scotland to form the Kingdom of Great Britain.
 Kingdom of Great Britain continued from 1707 until 1801 when it merged with the Kingdom of Ireland to form the United Kingdom of Great Britain and Ireland, which itself became the United Kingdom of Great Britain and Northern Ireland (UK) in 1922 (in reality; in name in 1927) upon independence for most of the island of Ireland.
 The UK since then has gone through significant change to its system of government, with devolved parliaments, assemblies and governments in Scotland, Wales and Northern Ireland.
 England, however, remains under the full jurisdiction, on all matters, of the Parliament of the United Kingdom of Great Britain and Northern Ireland and the UK government as no devolved administration has been created for England within the new structure.
 This situation has led to the anomaly, known as the West Lothian question, which is that Scottish Members of Parliament (MPs) are able to vote on legislation that affects only England whereas English MPs can not vote on certain Scottish matters due to devolution.
 In some cases, such as top-up university tuition fees and foundation hospitals, the votes of Scottish MPs have been crucial in helping pass legislation for England that the majority of English MPs have opposed.
Jacob Abraham Uitenhage de Mist (20 April 1749 – 3 August 1823) was a Dutch statesman.
 He was Head of State of the National Assembly of the Batavian Republic from 17 April 1797 – 1 May 1797 and Commissioner-General of the Cape Colony during the interregnum from 21 February 1803 – 25 September 1804 in accordance with the short-lived Treaty of Amiens.
 The Cape Colony had been under Dutch control from 1652.
 In 1795 it was occupied by the British following the Battle of Muizenberg but under the final terms of peace between Great Britain, France and the Netherlands – then the Batavian Republic – in 1802, the colony was restored to the Batavian Republic.
Winter Island is an island connected by a causeway to Salem Neck in Salem, Massachusetts.
 It is about 45 acre in size, and is bounded by Smith Pool to the northwest, Cat Cove to the west, Salem Channel to the south and east, and Juniper Cove to the north.
 The island has about a dozen residences at the north end and one road, Winter Island Road.
 The Plummer Home for Boys sits on 18 acre of land on the northeastern shore.
 The balance of the island is Winter Island Marine Park.
 The entire island was added to the National Register of Historic Places as Winter Island Historic District and Archeological District in 1994.
The Anglo-Dutch wars (Dutch: "Engels–Nederlandse Oorlogen" or "Engelse Zeeoorlogen" ) were a series of conflicts fought, on one side, by the Dutch States (the Dutch Republic, later the Batavian Republic) and, on the other side, first by England (the Commonwealth of England and then the Kingdom of England) and later by the Kingdom of Great Britain/the United Kingdom of Great Britain and Ireland.
 They were predominantly fought in the second half of the 17th century, mainly over trade and overseas colonies.
 Almost all the battles were fought at sea.
The Convention of Alkmaar was a 1799 agreement concluded between the commanders of the expeditionary forces of Great Britain and Russia on the one hand, and of those of the First French Republic and the Batavian Republic on the other, in the Dutch city of Alkmaar, by which the British and Russians agreed to withdraw their forces from the Batavian Republic following the failed Anglo-Russian Invasion of Holland.
 The Russian and British forces under the Duke of York were transported back to Britain in the weeks after the Convention was signed.
The Invasion of Ceylon was a military campaign fought as a series of amphibious operations between the summer of 1795 and spring of 1796 between the garrison of the Batavian colonies on the Indian Ocean island of Ceylon (now Sri Lanka) and a British invasion force sent from British India.
 The Dutch Republic had been a British ally during the French Revolutionary Wars, but was overrun by the French Republic in the winter of 1794 and reformed into the client state of the Batavian Republic.
 The British government, working with the exiled Stadtholder William of Orange, ordered the seizure of Batavian assets including colonies of the former Dutch Empire.
 Among the first territories to be attacked were those on the coast of the island of Ceylon, with operations initially focused on the trading port at Trincomalee.
Fort Pickering is a 17th-century historic fort site on Winter Island in Salem, Massachusetts.
 Fort Pickering operated as a strategic coastal defense and military barracks for Salem Harbor during a variety of periods, serving as a fortification from the Anglo-Dutch Wars through World War II.
 Construction of the original fort began in 1643 and it saw use as a military installation into the 20th century.
 Fort Pickering is a First System fortification named for Colonel Timothy Pickering, adjutant general of the Continental Army and secretary of War in 1795.
 Today, the remains of the fort are open to the public as part of the Winter Island Maritime Park, operated by the City of Salem.