Problem: Background: Abraham Ortelius (; also Ortels, Orthellius, Wortels; 14 April 1527 - 28 June 1598) was a Flemish cartographer and geographer, conventionally recognized as the creator of the first modern atlas, the Theatrum Orbis Terrarum (Theatre of the World). Ortelius is often considered one of the founders of the Netherlandish school of cartography and one of the most notable representatives of the school in its golden age (approximately 1570s-1670s). The publication of his atlas in 1570 is often considered as the official beginning of the Golden Age of Netherlandish cartography.
Context: In 1564 he published his first map, Typus Orbis Terrarum, an eight-leaved wall map of the world, on which he identified the Regio Patalis with Locach as a northward extension of the Terra Australis, reaching as far as New Guinea. This map subsequently appeared in reduced form in the Terrarum (the only extant copy is in now at Basel University Library). He also published a two-sheet map of Egypt in 1565, a plan of the Brittenburg castle on the coast of the Netherlands in 1568, an eight-sheet map of Asia in 1567, and a six-sheet map of Spain before the appearance of his atlas.  In England Ortelius' contacts included William Camden, Richard Hakluyt, Thomas Penny, puritan controversialist William Charke, and Humphrey Llwyd, who would contribute the map of England and Wales to Ortelius's 1573 edition of the Theatrum.  In 1578 he laid the basis of a critical treatment of ancient geography by his Synonymia geographica (issued by the Plantin press at Antwerp and republished in expanded form as Thesaurus geographicus in 1587 and again expanded in 1596. In this last edition, Ortelius considers the possibility of continental drift, a hypothesis proved correct only centuries later).  In 1596 he received a presentation from Antwerp city, similar to that afterwards bestowed on Rubens. His death on 28 June 1598, and his burial in the church of St. Michael's Abbey, Antwerp, were marked by public mourning. Quietis cultor sine lite, uxore, prole (meaning - "served quietly, without accusation, wife, and offspring." ), reads the inscription on his tombstone.
Question: What was the basis of a critical treatment that he laid out?
Answer: In this last edition, Ortelius considers the possibility of continental drift, a hypothesis proved correct only centuries later).

Problem: Background: Ronald Wilson Reagan was born on February 6, 1911 in an apartment on the second floor of a commercial building in Tampico, Illinois. He was the younger son of Nelle Clyde (nee Wilson; 1883-1962) and Jack Reagan (1883-1941). Jack was a salesman and storyteller whose grandparents were Irish Catholic emigrants from County Tipperary, while Nelle was of half English and half Scottish descent (her mother was born in Surrey). Reagan's older brother, Neil Reagan (1908-1996), became an advertising executive.
Context: After completing 14 home-study Army Extension Courses, Reagan enlisted in the Army Enlisted Reserve and was commissioned a second lieutenant in the Officers' Reserve Corps of the Cavalry on May 25, 1937.  On April 18, 1942, Reagan was ordered to active duty for the first time. Due to his poor eyesight, he was classified for limited service only, which excluded him from serving overseas. His first assignment was at the San Francisco Port of Embarkation at Fort Mason, California, as a liaison officer of the Port and Transportation Office. Upon the approval of the Army Air Forces (AAF), he applied for a transfer from the cavalry to the AAF on May 15, 1942, and was assigned to AAF Public Relations and subsequently to the First Motion Picture Unit (officially, the "18th Army Air Force Base Unit") in Culver City, California. On January 14, 1943, he was promoted to first lieutenant and was sent to the Provisional Task Force Show Unit of This Is the Army at Burbank, California. He returned to the First Motion Picture Unit after completing this duty and was promoted to captain on July 22, 1943.  In January 1944, Reagan was ordered to temporary duty in New York City to participate in the opening of the Sixth War Loan Drive, which campaigned for the purchase of war bonds. He was reassigned to the First Motion Picture Unit on November 14, 1944, where he remained until the end of World War II. He was recommended for promotion to major on February 2, 1945, but this recommendation was disapproved on July 17 of that year. While with the First Motion Picture Unit in 1945, he was indirectly involved in discovering actress Marilyn Monroe. He returned to Fort MacArthur, California, where he was separated from active duty on December 9, 1945. By the end of the war, his units had produced some 400 training films for the AAF.
Question: What did he do after 1945?
Answer: