When Abraham Cahan arrived in the United States, he, like so many immigrants, had many questions. How would he live in this new land? He became a voice for the people. First as a journalist, then as the founder and editor of the Yiddish-language newspaper the Forverts (the Forward). From explaining voting rights and the importance of public health measures to answering everyday questions like how to play baseball, Cahan improved the lives of countless...