Please answer the following question: Information: - The euro (sign: ; code: EUR) is the official currency of the eurozone, which consists of 19 of the member states of the European Union: Austria, Belgium, Cyprus, Estonia, Finland, France, Germany, Greece, Ireland, Italy, Latvia, Lithuania, Luxembourg, Malta, the Netherlands, Portugal, Slovakia, Slovenia, and Spain. The currency is also officially used by the institutions of the European Union and four other European countries, as well as unilaterally by two others, and is consequently used daily by some 337million Europeans . Outside of Europe, a number of overseas territories of EU members also use the euro as their currency. - The European Union (EU) is a political and economic union of member states that are located primarily in Europe. It has an area of , and an estimated population of over 510 million. The EU has developed an internal single market through a standardised system of laws that apply in all member states. EU policies aim to ensure the free movement of people, goods, services, and capital within the internal market, enact legislation in justice and home affairs, and maintain common policies on trade, agriculture, fisheries, and regional development. Within the Schengen Area, passport controls have been abolished. A monetary union was established in 1999 and came into full force in 2002, and is composed of 19 EU member states which use the euro currency. - World WarII (often abbreviated to WWII or WW2), also known as the Second World War, was a global war that lasted from 1939 to 1945, although related conflicts began earlier. It involved the vast majority of the world's nationsincluding all of the great powerseventually forming two opposing military alliances: the Allies and the Axis. It was the most widespread war in history, and directly involved more than 100 million people from over 30 countries. In a state of "total war", the major participants threw their entire economic, industrial, and scientific capabilities behind the war effort, erasing the distinction between civilian and military resources. Marked by mass deaths of civilians, including the Holocaust (in which approximately 11 million people were killed) and the strategic bombing of industrial and population centres (in which approximately one million were killed, and which included the atomic bombings of Hiroshima and Nagasaki), it resulted in an estimated 50 million to 85 million fatalities. These made World WarII the deadliest conflict in human history. - Frankfurt am Main is a metropolis and the largest city in the German state of Hesse and the fifth-largest city in Germany, with a 2015 population of 731,095 within its administrative boundaries, and 2.3million in its urban area. The city is at the centre of the larger Frankfurt Rhine-Main Metropolitan Region, which has a population of 5.8million and is Germany's second-largest metropolitan region after Rhine-Ruhr. Since the enlargement of the European Union in 2013, the geographic centre of the EU is about to the east of Frankfurt's CBD, the Bankenviertel. Frankfurt is culturally and ethnically diverse, with around half of the population, and a majority of young people, having a migration background. A quarter of the population are foreign nationals, including many expatriates. - The Taunus is a mountain range in Hesse, Germany located north of Frankfurt. The tallest peak in the range is "Groer Feldberg" at 878 m; other notable peaks are "Kleiner Feldberg" (825 m) and "Altkonig" (798 m). - Riesling is a white grape variety which originated in the Rhine region of Germany. Riesling is an aromatic grape variety displaying flowery, almost perfumed, aromas as well as high acidity. It is used to make dry, semi-sweet, sweet, and sparkling white wines. Riesling wines are usually varietally pure and are seldom oaked. As of 2004, Riesling was estimated to be the world's 20th most grown variety at (with an increasing trend), but in terms of importance for quality wines, it is usually included in the "top three" white wine varieties together with Chardonnay and Sauvignon blanc. Riesling is a variety which is highly ""terroir"-expressive", meaning that the character of Riesling wines is greatly influenced by the wine's place of origin. - Rheingau-Taunus is a Kreis (district) in the west of Hesse, Germany. Neighboring districts are Limburg-Weilburg, Hochtaunuskreis, Main-Taunus-Kreis, district-free Wiesbaden, Mainz-Bingen, Rhein-Lahn. - Hesse or Hessia (, Hessian dialect: "Hesse" ) is a federal state ("Land") of the Federal Republic of Germany, with just over six million inhabitants. The state capital is Wiesbaden; the largest city is Frankfurt am Main. Until the formation of the German Reich in 1871, Hesse was an independent country ruled by a Grand Duke (Grand Duchy of Hesse). Due to divisions after World War II, the modern federal state does not cover the entire cultural region of Hesse which includes both the State of Hesse and the area known as Rhenish Hesse (Rheinhessen) in the neighbouring state of Rhineland-Palatinate. - Rhenish Hesse or Rhine-Hesse is a region and a former government district (Regierungsbezirk) in the German state of Rhineland-Palatinate, made up of those territories west of the Upper Rhine river that from 1816 were part of the Grand Duchy of Hesse and of the People's State of Hesse until 1945. The hilly countryside is largely devoted to vineyards, comprising the Rheinhessen wine region. - The Grand Duchy of Hesse and by Rhine, or the Grand Duchy of Hesse between 1806 and 1816, was an independent country and member state of the German Confederation as of 1806, when the Landgraviate of Hesse-Darmstadt was elevated to a Grand Duchy which it remained until 1918, when the monarchy was overthrown. Hesse lost its independence when it joined the German Empire in 1871. Before 1866, its northern neighbour was its former sister Landgraviate, since 1803 an Electorate, of Hesse-Kassel for this reason, this state was sometimes colloquially known as Hesse-Darmstadt. - Deutsches Reich was the official name for the German nation state from 1871 to 1943 in the German language. It translates literally to "German Empire", with a context approximating that of "German Realm". From 1943 to 1945, the official name was but not formally proclaimed Grodeutsches Reich ("Great German Reich") on account of the new territories annexed into the state's administration during the Second World War. - Wiesbaden is a city in central western Germany and the capital of the federal state of Hesse. In July 2016, it had about 288,000 inhabitants, plus approximately 19,000 United States citizens (mostly associated with the United States Army). The Wiesbaden urban area is home to approx. 560,000 people. - The United States Army (USA) is the largest branch of the United States Armed Forces and performs land-based military operations. It is one of the seven uniformed services of the United States and is designated as the Army of the United States in the United States Constitution, Article 2, Section 2, Clause 1 and United States Code, Title 10, Subtitle B, Chapter 301, Section 3001. As the largest and senior branch of the U.S. military, the modern U.S. Army has its roots in the Continental Army, which was formed (14 June 1775) to fight the American Revolutionary War (17751783)before the U.S. was established as a country. After the Revolutionary War, the Congress of the Confederation created the United States Army on 3 June 1784, to replace the disbanded Continental Army. The United States Army considers itself descended from the Continental Army, and dates its institutional inception from the origin of that armed force in 1775. - The Rheingau ( literally '' Rhine District '' ) consists of the district on the Northern side of the Rhine between the German towns of Wiesbaden and Lorch near Frankfurt , reaching from the Western Taunus to the Rhine . It is situated in the German state of Hesse and is part of the Rheingau - Taunus - Kreis administrative district . It is famous for Rheingau wines , especially the '' Rheingauer Riesling , '' and its many taverns . After reading the paragraphs above, we are interested in knowing the entity with which 'rheingau' exhibits the relationship of 'dissolved or abolished'. Find the answer from the choices below. Choices: - 10 - 1775 - 1783 - 1806 - 1816 - 1866 - 1871 - 19 - 1918 - 1939 - 1943 - 1945 - 1999 - 2004 - 2015 - 825
A:
1866