Why did the assassination of archduke francis ferdinand spark world war 1

I’m annoyed but glad that my history teacher left and quit her job as a teacher to become a flight attendant

Are there any english colleges in south korea for americans that is international ?

Which best explains how wealthy residents of italian cities contributed to the renaissance? a) wealthy residents bought works of art, which supported artists. b) wealthy residents participated in religion, which supported the church c) wealthy residents participated in music, which supported the arts. d) wealthy residents bought classical books, which supported scholars.