Which verb means to abandon your country and transfer your allegiance to another nation?

Ron Kovic's memoir "Born on the Fourth of July" describes his wounding in which war? 373.15 is the boiling point of water on the scale named for which Belfast-born physicist who worked in Glasgow? The company 3M originally stood for which state's Mining and Manufacturing Company? In 1930, 3M's Richard Drew invented which product to seal the cellophane wrapping of food products? Which 2005 Broadway smash follows four blue-collar guys from the streets of Newark to pop stardom as the Four Seasons? Dutch builders in Leeuwarden set a 2006 world record by toppling more than 4 million of which items? In ancient Egyptian measurement, 4 digits (finger widths) made a palm. What did 5 digits make? Which four-letter word is often used for a small pigeon?