Maastricht in the context of "Mosasaur"

The Treaties of the European Union are a set of international treaties between the European Union (EU) member states which sets out the EU's constitutional basis. They establish the various EU institutions together with their remit, procedures and objectives. The EU can only act within the competences granted to it through these treaties and amendment to the treaties requires the agreement and ratification (according to their national procedures) of every single signatory.

Two core functional treaties, the Treaty on European Union (originally signed in Maastricht in 1992, The Maastricht Treaty) and the Treaty on the Functioning of the European Union (originally signed in Rome in 1957 as the Treaty establishing the European Economic Community i.e. The Treaty of Rome), lay out how the EU operates, and there are a number of satellite treaties which are interconnected with them. The treaties have been repeatedly amended by other treaties over the 65 years since they were first signed. The consolidated version of the two core treaties is regularly published by the European Commission.

Liège (/liˈɛʒ, liˈeɪʒ/ lee-EZH, lee-AYZH; French: [ljɛʒ] ; Walloon: Lîdje [liːtʃ]; Dutch: Luik [lœyk] ; German: Lüttich [ˈlʏtɪç] ) is a city and municipality in the Belgian region of Wallonia, and the capital of the eponymous province. The city is situated in the valley of the Meuse, in the east of Belgium, not far from borders with the Netherlands (Maastricht is about 33 km (20.5 mi) to the north) and with Germany (Aachen is about 53 km (32.9 mi) north-east). In Liège, the Meuse meets the river Ourthe. The city is part of the sillon industriel, the former industrial backbone of Wallonia. It still is the principal economic and cultural centre of the region.

The municipality consists of the following sub-municipalities: Angleur, Bressoux, Chênée, Glain, Grivegnée, Jupille-sur-Meuse, Liège proper, Rocourt, and Wandre. In January 2022, Liège had 195,278 inhabitants. The metropolitan area, including the outer commuter zone, covers an area of 1,879 km (725 sq mi) and had a total population of 749,110 on 1 January 2008. This includes a total of 52 municipalities, among others, Herstal and Seraing. Liège ranks as the third most populous urban area in Belgium, after Brussels and Antwerp, and the fourth municipality after Antwerp, Ghent and Charleroi. The city is part of the Meuse-Rhine Euroregion.

Eupen (German: [ˈɔʏpn̩] , French: [øpɛn] , Dutch: [ˈøːpə(n)] ; Ripuarian: Ööpe [ˈøːpə]; Walloon: Neyåw [nɛjɑːw]; former French: Néau [neo]) is the capital of German-speaking Community of Belgium and is a city and municipality in the Belgian province of Liège, 15 kilometres (9 miles) from the German border (Aachen), from the Dutch border (Maastricht) and from the "High Fens" nature reserve (Ardennes). The town is also the capital of the Euroregion Meuse-Rhine.

First mentioned in 1213 as belonging to the Duchy of Limburg, possession of Eupen passed to Brabant, Burgundy, the Holy Roman Empire and France before being given in 1815 to Prussia, which became part of the new German Empire in 1871. In 1919, after the First World War, the Treaty of Versailles transferred Eupen and the nearby municipality of Malmedy from Germany to Belgium.

Limburg (Dutch pronunciation: [ˈlɪmbʏr(ə)x] ; Limburgish: [ˈlɪm˦ˌbʏʀ˦əx]), also known as Dutch Limburg, is the southernmost of the twelve provinces of the Netherlands. It is bordered by Gelderland to the north and by North Brabant to the west. Its long eastern boundary forms the border with the German state of North Rhine-Westphalia. To the west is the border with the Belgian province of Limburg, part of which is delineated by the river Meuse. To the south, Limburg is bordered by the Belgian province of Liège. The Vaalserberg is the extreme southeastern point, the tripoint of the Netherlands, Germany, and Belgium.

Limburg had a population of about 1,128,000 in January 2023. Its main municipalities are the provincial capital Maastricht (population 120,837 as of January 2022), Venlo (population 102,176) in the northeast, as well as Sittard-Geleen (population 91,760, bordering both Belgium and Germany) and Heerlen (population 86,874) in the south. More than half of the population, approximately 650,000 people, live in the south of Limburg, which corresponds to roughly one-third of the province's area proper. In South Limburg, most people live in the urban agglomerations of Maastricht, Parkstad and Sittard-Geleen.

The Jeker (Dutch pronunciation: [ˈjeːkər] ; French: Geer, French pronunciation: [ʒɛʁ]) is a river in Belgium and in the Netherlands. It is a left-bank tributary to the river Meuse. The source of the Jeker is near the village of Geer, in the Belgian province of Liège. The river is approximately 54 kilometres (34 mi) long, of which about 50 kilometres (31 mi) is in Belgium (provinces of Liège and Limburg) and 4 kilometres (2.5 mi) in the Netherlands (province of Limburg), where it flows into the river Meuse at Maastricht (Netherlands).

Places through which the Jeker passes include Waremme, Tongeren, Kanne, (all three in Belgium) and Maastricht.

Mount Saint Peter (French: Montagne Saint-Pierre; Dutch: Sint-Pietersberg), also referred to as Caestert Plateau, is the northern part of a plateau running north to south between the valleys of the river Geer to the west, and the Meuse to the east. The plateau runs from Maastricht in the Netherlands, through Riemst in Belgian Limburg almost to the city of Liège in Belgium, thus defining the topography of this border area between Flanders, Wallonia and the Netherlands. The name of the hill, as well as the nearby village and church of Sint Pieter and the fortress of Sint Pieter, refers to Saint Peter, one of the Twelve Apostles.

The Euregio Meuse-Rhine (Dutch: Euregio Maas–Rijn [øːˈreːɣijoː ˌmaːsˈrɛin], French: Eurorégion Meuse–Rhin [øʁɔʁeʒjɔ̃ møz ʁɛ̃], German: Euregio Maas–Rhein [ɔʏˈʁeːɡi̯o ˌmaːsˈʁaɪn], Limburgish: Euregio Maas–Rien [øːˈʀeːɣijoː ˌmaːsˈʀiːn]) is a Euroregion created in 1976, with judicial status achieved in 1991. It comprises 11.000 km and has around 3.9 million inhabitants around the city-corridor of Aachen–Maastricht–Hasselt–Liège. The seat of the region has been in Eupen, Belgium since 1 January 2007. Within a wider context, the region is part of what is called the Blue Banana European urbanisation corridor.

The Maastrichtian ( /mɑːˈstrɪktiən/ mahss-TRIK-tee-ən) is, in the International Commission on Stratigraphy (ICS) geologic timescale, the latest age (uppermost stage) of the Late Cretaceous Epoch or Upper Cretaceous Series, the Cretaceous Period or System, and of the Mesozoic Era or Erathem. It spanned the interval from 72.2 to 66 million years ago. The Maastrichtian was preceded by the Campanian and succeeded by the Danian (part of the Paleogene and Paleocene). It is named after the city of Maastricht, the capital and largest city of the Limburg province in the Netherlands.

The Cretaceous–Paleogene extinction event (formerly known as the Cretaceous–Tertiary extinction event) occurred at the end of this age. In this mass extinction, many commonly recognized groups such as non-avian dinosaurs, pterosaurs, plesiosaurs and mosasaurs, as well as many other lesser-known groups, died out. The cause of the extinction is most commonly linked to an asteroid about 10 to 15 kilometres (6.2 to 9.3 mi) wide colliding with Earth, ending the Cretaceous.

Jean-Baptiste Coclers (Maastricht, 14 October 1696 – Liège, 23 May 1772) was a Southern Netherlandish portrait painter and a painter of floral still lifes and historical subjects.