After defeating his brothers in a civil war, Mehmed I reunited which empire in 1413?

Which comic strip was created by Matt Groening before "The Simpsons"? Complete the title of Maurice Sendak's 1970 picture book: "In the ___ Kitchen." In 1913, Elmer McCollum helped discover which nutrient, needed for healthy eyes? By mid-1990, all of Liberia except parts of which capital city was controlled by rival rebel groups? Motorola's StarTAC, introduced in 1996, was an early flip-style version of what device? Which secretary of defense was kept in office by President Obama after serving under George W. Bush? By occupation, Antonin Scalia and William Rehnquist were what? Which humorist died with aviator Wiley Post in a plane crash near Point Barrow, Alaska, on August 15, 1935?