He was Secretary of State for War and the Colonies between 1834 and 1835 and again Foreign Secretary between 1841 and 1846 under Sir Robert Peel. It was during his second stint as Foreign Secretary that he settled two disagreements with the US – the Northeast Boundary dispute by the Webster-Ashburton Treaty ( 1842 ), and the Oregon dispute by the Oregon Treaty of 1846.

The signing of the Webster-Ashburton Treaty in 1842 later adjusted the U. S. boundary northward to include the strategically important site of " Fort Blunder.

* Webster-Ashburton Treaty of 1842.

* The Webster-Ashburton Treaty, signed August 9, 1842, settled the dispute over the location of the Maine-New Brunswick border between the United States and Canada.

* August 9 – The Webster-Ashburton Treaty is signed, establishing the United States – Canada border east of the Rocky Mountains.

As Secretary of State, he negotiated the Webster-Ashburton Treaty, which established the definitive eastern border between the United States and Canada.

During the administration of Sir Robert Peel, Palmerston led a retired life, but he attacked with characteristic bitterness the Webster-Ashburton Treaty with the United States.

The Webster-Ashburton Treaty of 1842, resolved the several Canadian boundary disputes between the Great Britain and the United States, particularly over the exact border between New Brunswick and the State of Maine of the United States and the exact boundary between Canada and the State of Minnesota from Lake Superior and the Lake of the Woods.

Much as he criticised the Treaty, the Webster-Ashburton Treaty did, however, successfully close some other questions with which Palmerston had long been concerned.

* Howard Jones ; To the Webster-Ashburton Treaty: A Study in Anglo-American Relations, 1783-1843 University of North Carolina Press, 1977

* The Avalon Project at Yale Law School: The Webster-Ashburton Treaty and The Caroline Case

Daniel Webster and Alexander Baring, 1st Baron Ashburton, reached a compromise the Webster-Ashburton Treaty of Washington in 1842, which settled the Maine-Canada boundary and the boundary between Canada and New Hampshire, Michigan and Minnesota.

To the Webster-Ashburton Treaty: A Study in Anglo-American Relations, 1783-1843 ( 1977 ).

" The Webster-Ashburton Treaty and the Minnesota Iron Ranges ," Journal of American History, Vol.

" The Webster-Ashburton Treaty and the Minnesota Iron Ranges ," Journal of American History, Vol.

* Text of the Webster-Ashburton Treaty ( The Avalon Project at Yale Law School )

* Webster-Ashburton Treaty ( U. S. Department of State )

In 1842 he was again sent to America, and the same year concluded the Webster-Ashburton Treaty.

The boundary of British North America with Maine was finally determined by Webster-Ashburton Treaty of 1842.

* August 9, 1842: Webster-Ashburton Treaty signed, establishing the United States – Canada border east of the Rocky Mountains.

This commission also became involved in investigating issues surrounding the eastern border with Nova Scotia ( now New Brunswick ), a matter that would not be resolved until the 1842 Webster-Ashburton Treaty.

Notable examples from the colonial period include the Nootka Convention, the War of 1812, the Rush-Bagot Treaty, the Treaty of 1818, the Webster-Ashburton Treaty, and the Oregon Treaty.

Due to ambiguities in the treaty, the ownership of Machias Seal Island and North Rock remains disputed between the U. S. and Canada ; other original territorial ambiguities ( including the Northeastern Boundary Dispute and the disputed Indian Stream territory ) were resolved by the Webster-Ashburton Treaty in 1842.

Webster-Ashburton Treaty of 1842 which finalized the border between United States and Canada ( a British colony at the time ).

* The " Frontier Route "— surveyed in 1836 by Captain Yule ( Royal Engineers ) from Saint John, via Fredericton, up the Saint John River valley to Canada East, not far from the International Boundary which had been recently decided in favour of the United States during the Webster-Ashburton Treaty of 1842.

Early in the 1840s, negotiations that produced the 1842 Webster-Ashburton Treaty ( a border settlement in the east ) addressed the Oregon question once again.

In 1842, the land dispute was definitively resolved by the Webster-Ashburton Treaty, and the land was assigned to New Hampshire.

* The Webster-Ashburton Treaty of 1842 resolved uncertainties left by the 1818 treaty, including the Northwest Angle problem, which had been created by the use of a faulty map.

Full ownership of present-day Maine ( principally the northeastern borders with New Brunswick ) remained disputed until the Webster-Ashburton Treaty in 1842.

As part of the Webster-Ashburton Treaty of 1842 it was agreed that both countries would work together on the abolition of the slave trade, which was deemed piracy, and to continue the blockade of Africa.

The issue roused strong feelings on both sides of the Atlantic and arose during the discussions that produced the Webster-Ashburton Treaty of 1842.

The island was part of the disputed US-Canadian border dispute settled by the Webster-Ashburton Treaty, and affirmed to be part of the United States when the treaty was signed August 9, 1842.

Under the Treaty of Paris ( 1783 ) and the Webster-Ashburton Treaty ( 1842 ), the Little Forks Band of Rainy River Saulteaux were divided in half, with the southern half living about the Little Fork River being in the United States.

This road would become the key to the settlement of the Webster-Ashburton treaty of 1842.

Initially the US contribution consisted of a few ships, but eventually the Webster-Ashburton Treaty of 1842 formalized the US contribution into the Africa Squadron.

Baker was instrumental in the Aroostook War, a boundary dispute that established the international border between New Brunswick and the state of Maine, with the Webster-Ashburton Treaty.

Among other declarations, the Webster-Ashburton Treaty also called for a final end to the slave trade on the high seas, to be enforced by both signatories.

Confederate Secretary of State Toombs ’ official instructions to Yancey were to convince Europe of the righteousness and legality of southern secession, the viability of the militarily strong Confederacy, the value of cotton and virtually duty free trade, and the South ’ s willingness to observe all treaty agreements in effect between Britain and the United States except for the portion of the Webster-Ashburton Treaty requiring aid in combating the African slave trade.

The border was subsequently resolved in the Webster-Ashburton Treaty and the SA & Q began construction in the early 1850s, however, the delays saw the competitive advantage of St. Andrews disappear with the opening of the Atlantic and St. Lawrence Railroad in 1853 that connected the Canadian rail network at Montreal, Quebec with the Atlantic coast port of Portland, Maine.

" The Influence of Slavery on the Webster-Ashburton Negotiations ," Journal of Southern History, Vol.

" The Oregon Question in the Webster-Ashburton Negotiations ," Mississippi Valley Historical Review, Vol.

" The Influence of Slavery on the Webster-Ashburton Negotiations ," Journal of Southern History, Vol.

" The Oregon Question in the Webster-Ashburton Negotiations ," Mississippi Valley Historical Review, Vol.