What tranformed u. s. politics in the 1920s

"A split in the Democratic Party" was one reason among the choices given in the question that transformed U.S. politics in the 1920s. . I hope that this is the answer that has come to help

b. she founded a new dynasty that ruled egypt for generations.

the fact that could also be added to column b is that during world war ii, specifically between the years 1941 and 1945, japan expanded its territory towards the indonesian territory in what was known later as part of the "pacific war". in that time, japan could conquer the philipines, singapore,   borneo, central java, malang, cebu, sumatra and various other islands of the area, therefore expanding its territory for a brief period of time.