 More recently, studies related to race and urban life started to focus on ethnographic methods to study how individuals lived in relation to the city and their respective systems as a whole.Israel Zangwill wrote one of the first books on the Ghettos of Europe and how they impacted the Jewish children that were descendants of the original residents, "Children of the Ghetto" "(1892)," he also wrote two other books about the European Ghettos.Louis Wirth was the next scholar to write about the Ghettos, he wrote about them from a sociological perspective.