The Treaties of Versailles reaffirmed previous treaties.

The 1947 Treaty of Paris reaffirmed the borders between Romania and Hungary, as originally defined in Treaty of Trianon, 27 years earlier.

Treaty of London: the great powers of Europe reaffirm the neutrality of Luxembourg, ending the Luxembourg Crisis.

The Treaties of Versailles which ceded Minorca and Florida to Spain, reaffirmed previous treaties in the rest of issues, thus not affecting to Gibraltar.

The Treaty of Copenhagen reaffirmed the Swedish rule over Scania, Halland, Blekinge, and Bohuslän, while Bornholm and Trøndelag were returned.

At the end of the Napoleonic Wars, the Treaty of Paris reaffirmed the sovereignty of the Dutch in Suriname and of the French east of the Maroni, while Britain formally purchased the Dutch colonies in what became British Guyana.

Edward was successful, and the Treaty of Aberconwy in 1277 reaffirmed English dominance, dividing up most of Llwelyn's lands amongst his brothers and Edward.

The Treaty of Lisbon reaffirms that the EU's economy is a social market economy and grants the EU new powers in areas such as climate change and energy policy.

The Treaty of Lisbon reaffirms that the European Union is working for Europe's sustainable development.

However, the 1815 Treaty of Ghent reaffirmed American jurisdiction over Wisconsin, which was by then a part of Illinois Territory.