Question: What year was The Reichskommissariat Niederlande set up?

Context articles: June Uprising in Lithuania
Tom Bosworth
Ukrainian Auxiliary Police
Erich Koch
Reichskommissariat Niederlande
Reichskommissariat Norwegen
Arthur Seyss-Inquart
Bronna Góra
Ukrainian People's Militia
Multidimensional analysis

The June Uprising (Lithuanian: "birželio sukilimas" ) was a brief period in the history of Lithuania between the first Soviet occupation and the Nazi occupation in late June 1941.
 Approximately one year earlier, on June 15, 1940, the Red Army invaded Lithuania and the unpopular Lithuanian Soviet Socialist Republic was soon established.
 Political repression and terror were used to silence its critics and suppress any resistance.
 When Nazi Germany attacked the Soviet Union on June 22, 1941, a diverse segment of the Lithuanian population rose up against the Soviet regime, declared renewed independence, and formed the short-lived Provisional Government.
 Two large Lithuanian cities, Kaunas and Vilnius, fell into the hands of the rebels before the arrival of the Wehrmacht.
 Within a week, the German Army took control of the whole of Lithuania.
 The Lithuanians greeted the Germans as liberators from the repressive Soviet rule and hoped that the Germans would re-establish their independence or at least allow some degree of autonomy (similar to the Slovak Republic).
 No such support came from the Nazis, who steadily replaced Lithuanian institutions with their own administration.
 The Reichskommissariat Ostland was established at the end of July 1941.
 Deprived of any real power, the Provisional Government disbanded itself on August 5.
Thomas Stewart "Tom" Bosworth (born 17 January 1990) is a British race walker who holds the British records for walking 3 km, 5 km, 10 km and 20 km.
 He is currently ranked 1st overall in the UK for 20 km.
 He set the 20km British record in Dudince, Slovakia in March 2016 to better a 20km race walk mark set by Ian McCombie in 1988 clocking 80:41 taking 81 seconds off McCombie’s record, which was set just over a year before Bosworth was even born.
 He is the British Record Holder for the 10k race walk, 39:36, set in 2015 along with the 5000m race walk, 18:39.47, set in Sheffield at the 2017 British indoor team trials to qualify for the European Indoor Championships.
The Ukrainische Hilfspolizei or the Ukrainian Auxiliary Police () was the official title of the local police formation set up by Nazi Germany during World War II in "Reichskommissariat Ukraine"; shortly after the German conquest of the Ukrainian Soviet Socialist Republic in Operation Barbarossa against the Soviet Union, Germany's former ally in the invasion of Poland.
Erich Koch (19 June 1896 – 12 November 1986) was a "Gauleiter" of the Nazi Party (NSDAP) in East Prussia from 1928 until 1945.
 Between 1941 and 1945 he was Chief of Civil Administration ("Chef der Zivilverwaltung") of Bezirk Bialystok.
 During this period, he was also the "Reichskommissar" in Reichskommissariat Ukraine from 1941 until 1944.
 After the Second World War, Koch stood trial in Poland and was convicted in 1959 of war crimes and sentenced to death.
 The sentence was commuted to life imprisonment a year later.
The Reichskommissariat Niederlande was the civilian occupation regime set up by Germany in the German-occupied Netherlands during World War II.
 Its full title was the Reich Commissariat for the Occupied Dutch Territories (German: "Reichskommissariat für die besetzten niederländischen Gebiete" ).
 The administration was headed by Arthur Seyss-Inquart, formerly the last chancellor of Austria before initiating its annexation by Germany (the "Anschluss").
The Reichskommissariat Norwegen was the civilian occupation regime set up by Nazi Germany in German-occupied Norway during World War II.
 Its full title in German was the Reichskommissariat für die besetzten norwegischen Gebiete ("Reich Commissariat for the Occupied Norwegian Territories").
 It was governed by "Reichskommissar" Josef Terboven until his deposition on 7 May 1945.
 The German military forces in Norway, then under the command of general Franz Böhme, surrendered to the Allied forces on 9 May and the legal government was restored.
   (in German: Seyß-Inquart; 22 July 189216 October 1946) was an Austrian Nazi politician who served as Chancellor of Austria for two days – from 11 to 13 March 1938 – before the "Anschluss" annexation of Austria by Nazi Germany, signing the constitutional law as acting head of state upon the resignation of President Wilhelm Miklas.
Bronna Góra (or Bronna Mount in English, Belarusian: Бронная Гара, "Bronnaja Hara" ) is a name of secluded area in present-day Belarus where mass killings of Polish Jews were carried out by Nazi Germany during World War II.
 The location was part of the eastern half of occupied Poland, which was invaded by the Soviet Union in 1939 in agreement with Germany, and captured by the Wehrmacht two years later in Operation Barbarossa.
 It is estimated that from May 1942 until November of that year, during the most deadly phase of the Holocaust in Poland, some 50,000 Jews were murdered at Bronna Góra over execution pits.
 The victims were delivered in Holocaust trains from the wartime Jewish ghettos in Brześć, Bereza, Janów Poleski, Kobryń, , Antopol and other places along the western border of the "Reichskommissariat Ostland" (present-day West Belarus).
Ukrainian People's Militia or the Ukrainian National Militia (Ukrainian: "Українська Народна Міліція" ), was a paramilitary formation created by the Organization of Ukrainian Nationalists (OUN) in the General Government territory of occupied Poland and later in the Reichskommissariat Ukraine during World War II.
 It was set up in the course of the 1941 Operation Barbarossa following the Nazi German attack on the Soviet positions in eastern Poland.
 The formation, created in June 1941, preceded the official founding of the Ukrainian Auxiliary Police in mid-August 1941 by Heinrich Himmler.
 There is conclusive historical evidence indicating that members of the Ukrainian Militia took a leading role in the 1941 Lviv pogroms, resulting in the massacre of 6,000 Polish Jews, after the German army reached Lwów (Lemberg) at the end of June in Soviet-occupied eastern Poland (now Lviv, Ukraine).
 Initially the Ukrainian militia acted independently, with the blessings of the SS, but later were limited to joint operations ("Aktionen") with German units or otherwise functioned directly under the Nazi command.
In statistics, econometrics, and related fields, multidimensional analysis is a data analysis process that groups data into two categories: data dimensions and measurements.
 For example, a data set consisting of the number of wins for a single football team at each of several years is a single-dimensional (in this case, longitudinal) data set.
 A data set consisting of the number of wins for several football teams in a single year is also a single-dimensional (in this case, cross-sectional) data set.
 A data set consisting of the number of wins for several football teams over several years is a two-dimensional data set.