paragraph_text: Léon-Maxime Collignon (8 November 1849 in Verdun – 15 October 1917 in Paris) was a French archaeologist who specialized in ancient Greek art and architecture.

paragraph_text: Allan Kardec () is the pen name of the French educator, translator and author Hippolyte Léon Denizard Rivail (; 3 October 1804 – 31 March 1869). He is the author of the five books known as the Spiritist Codification, and is the founder of Spiritism.

paragraph_text: The Battle of France, also known as the Fall of France, was the German invasion of France and the Low Countries during the Second World War. In six weeks from 10 May 1940, German forces defeated Allied forces by mobile operations and conquered France, Belgium, Luxembourg and the Netherlands, bringing land operations on the Western Front to an end until 6 June 1944. Italy entered the war on 10 June 1940 and attempted an invasion of France.

paragraph_text: At the start of the war on 1 September 1939, the Allies consisted of France, Poland and the United Kingdom, and dependent states, such as the British India. Within days they were joined by the independent Dominions of the British Commonwealth: Australia, Canada, New Zealand and South Africa. After the start of the German invasion of North Europe till the Balkan Campaign, the Netherlands, Belgium, Greece and Yugoslavia joined the Allies. After first having cooperated with Germany in invading Poland whilst remaining neutral in the Allied - Axis conflict, the Soviet Union perforce joined the Allies in June 1941 after being invaded by Germany. The United States provided war materiel and money all along, and officially joined in December 1941 after the Japanese attack on Pearl Harbor. China had already been in a prolonged war with Japan since the Lugou Bridge Incident of 1937, but officially joined the Allies in 1941.

paragraph_text: André-Léon Vivrel (October 8, 1886 in Paris – April 7, 1976 in Paris), was a French painter and illustrator .

paragraph_text: Léon Werth wrote critically and with great precision on French society through World War I, colonization, and on French "collaboration" during World War II.

paragraph_text: The Soviet invasion of Poland was a Soviet military operation that started without a formal declaration of war on 17 September 1939. On that morning, 16 days after Germany invaded Poland from the west, the Soviet Union invaded Poland from the east. Subsequent military operations lasted for the following 20 days and ended on 6 October 1939 with the two - way division and annexation of the entire territory of the Second Polish Republic by both Germany and the Soviet Union. The joint German - Soviet invasion of Poland was secretly agreed to following the signing of the Molotov - Ribbentrop Pact on 23 August 1939.

paragraph_text: The Finnish and Baltic invasions began a deterioration of relations between the Soviets and Germany. Stalin's invasions were a severe irritant to Berlin, as the intent to accomplish these was not communicated to the Germans beforehand, and prompted concern that Stalin was seeking to form an anti-German bloc. Molotov's reassurances to the Germans, and the Germans' mistrust, intensified. On June 16, as the Soviets invaded Lithuania, but before they had invaded Latvia and Estonia, Ribbentrop instructed his staff "to submit a report as soon as possible as to whether in the Baltic States a tendency to seek support from the Reich can be observed or whether an attempt was made to form a bloc."

paragraph_text: Léon Bourjade (25 May 1889 – 22 October 1924), born Jean-Pierre Léon Bourjade, was a leading French fighter pilot in World War I, notable for being his country's leading balloon-busting ace. He interrupted his theological studies to fight in World War I; post-war, he completed his studies and spent the few remaining years of his life as a missionary in what is now Papua New Guinea.

paragraph_text: Camille Pelletan was educated in Paris, passed as licentiate in laws, and studied at the "École Nationale des Chartes" where he was qualified as an "archiviste paléographe". At the age of twenty he became an active journalist, and a bitter critic of the Imperial Government. After the war of 1870-71 he took a leading place among the Radicals, as an opponent of the "Opportunist Republicans" who continued the policy of Léon Gambetta.

paragraph_text: Pierre Nord, real name André Léon Brouillard (15 April 1900 – 10 December 1985), was a French writer, spy and resistance member.

paragraph_text: Pépito is a one act opéra comique of 1853 with music by Jacques Offenbach. The French libretto is by Léon Battu and Jules Moinaux, inspired by an 1825 vaudeville by Scribe.

paragraph_text: At the start of the war on 1 September 1939, the Allies consisted of France, Poland and the United Kingdom, as well as their dependent states, such as British India. Within days they were joined by the independent Dominions of the British Commonwealth: Australia, Canada, New Zealand and South Africa. After the start of the German invasion of North Europe until the Balkan Campaign, the Netherlands, Belgium, Greece, and Yugoslavia joined the Allies. After first having cooperated with Germany in invading Poland whilst remaining neutral in the Allied - Axis conflict, the Soviet Union perforce joined the Allies in June 1941 after being invaded by Germany. The United States provided war materiel and money all along, and officially joined in December 1941 after the Japanese attack on Pearl Harbor. China had already been in a prolonged war with Japan since the Marco Polo Bridge Incident of 1937, but officially joined the Allies in 1941.

paragraph_text: Sporadic use of the term for some of the subject matter occurred subsequently, such as the use by Étienne Serres in 1838 to describe the natural history, or paleontology, of man, based on comparative anatomy, and the creation of a chair in anthropology and ethnography in 1850 at the National Museum of Natural History (France) by Jean Louis Armand de Quatrefages de Bréau. Various short-lived organizations of anthropologists had already been formed. The Société Ethnologique de Paris, the first to use Ethnology, was formed in 1839. Its members were primarily anti-slavery activists. When slavery was abolished in France in 1848 the Société was abandoned.

paragraph_text: The Snake Charmer is an oil-on-canvas Orientalist painting by French artist Jean-Léon Gérôme produced around 1879. It is signed "J.L Gerome 1880".

paragraph_text: Léon Meyer (11 September 1868 – 22 January 1948) was a French freight broker and Radical politician from the port city of Le Havre.

paragraph_text: David Léon Cahun (23 June 1841, Haguenau, Alsace – 30 March 1900, Paris) was a French traveler, Orientalist and writer.

paragraph_text: Léon Martin Fourichon (10 January 1809, Thiviers – 24 November 1884, Paris) was a French naval officer, colonial administrator and politician.

paragraph_text: Léon Arthur Tutundjian (; 1905, Amasya, Ottoman Empire – December 1968, Paris, France) was an Armenian painter who reached fame in France.

paragraph_text: He studied science at the Muséum national d'histoire naturelle in Paris, where he was influenced by scientists that included biologist Jean Louis Armand de Quatrefages de Bréau, zoologist Alphonse Milne-Edwards, and anthropologist Ernest Hamy. From 1889 to 1892, he was employed as a chemical engineer at the French-owned El Boleo mining installation in Santa Rosalia, Baja California Sur. During that period, he explored the peninsula's interior, collecting natural history specimens for the National Museum of Natural History in Paris. Afterwards, from 1893 to 1914, he made six more trips to Mexico as an explorer and collector:

Question: When was the country where Leon Diguet was educated invaded by Germany in WWII?
Answer: 10 May 1940