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Hans Bielenstein writes that as far back as the Han dynasty (202 BCE220 CE), the Han Chinese government "maintained the fiction" that the foreign officials administering the various "Dependent States" and oasis city-states of the Western Regions (composed of the Tarim Basin and oasis of Turpan) were true Han representatives due to the Han government's conferral of Chinese seals and seal cords to them.

Who believed that they were the true Han Western representatives?
Answer: foreign officials
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He attained a perfect score on the graduate school entrance exams to Princeton University in mathematics and physicsan unprecedented featbut did rather poorly on the history and English portions. Attendees at Feynman's first seminar included Albert Einstein, Wolfgang Pauli, and John von Neumann. He received a PhD from Princeton in 1942; his thesis advisor was John Archibald Wheeler. Feynman's thesis applied the principle of stationary action to problems of quantum mechanics, inspired by a desire to quantize the WheelerFeynman absorber theory of electrodynamics, laying the groundwork for the "path integral" approach and Feynman diagrams, and was titled "The Principle of Least Action in Quantum Mechanics".

When did he receive his PhD?
Answer: 1942
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Josip Broz was born on 7 May 1892 in Kumrovec, in the northern Croatian region of Hrvatsko Zagorje in Austria-Hungary.[nb 1] He was the seventh child of Franjo and Marija Broz. His father, Franjo Broz (26 November 1860 16 December 1936), was a Croat, while his mother Marija (25 March 1864 14 January 1918), was a Slovene. His parents were married on 21 January 1891. After spending part of his childhood years with his maternal grandfather Martin Javersek in the Slovenian village of Podsreda, he entered primary school in 1900 at Kumrovec, he failed the 2nd grade and graduated in 1905. In 1907 he moved out of the rural environment and started working as a machinist's apprentice in Sisak. There, he became aware of the labour movement and celebrated 1 May Labour Day for the first time. In 1910, he joined the union of metallurgy workers and at the same time the Social-Democratic Party of Croatia and Slavonia. Between 1911 and 1913, Broz worked for shorter periods in Kamnik (19111912, factory "Titan"), Cenkov, Munich and Mannheim, where he worked for the Benz car factory; then he went to Wiener Neustadt, Austria, and worked as a test driver for Daimler.

What ethnicity was Broz's mother?
Answer:
Slovene