Question 1: Curiously, the cases N = 3 or 4 have the richest and most difficult ________ and topology.  

Question 2: ________, loop quantum gravity, string theory, and black hole thermodynamics all predict a quantized spacetime with agreement on the order of magnitude.  

Question 3: The peoples of the ________ have kept this understanding until now^{[5]}.  

Question 4: Events which occur to or by a ________ along its path (i.e., while travelling at c, the speed of light) all have lightlike separation.  

Question 5: The first reference to spacetime as a mathematical concept was in 1754 by Jean le Rond d'Alembert in the article Dimension in ________.  

Question 6: ________ regarded space and time as a single concept, named pacha (Quechua: pacha, Aymara: pacha)^{[2]}^{[3]}^{[4]}.  

Question 7: If T > 1, subatomic particles which decay after a fixed period would not behave predictably, because timelike ________ would not be necessarily maximal.  

Question 8: In 1920, ________ showed that if we fix T = 1 and let N > 3, the orbit of a planet about its sun cannot remain stable.  

Question 9: These restrictions correspond roughly to a particular mathematical model which differs from Euclidean space in its manifest ________.  

Question 10: ________ noted that time is a result of space (universe/world) and that God created space which resulted in time also being created either simultaneously with space or immediately thereafter.  

