Before 1905, some Zionist leaders were thinking about making places for Jews to call home other than Palestine. Theodor Herzl's "Der Judenstaat" argued for a Jewish state in either Palestine, "our ever-memorable historic home", or Argentina, "one of the most fertile countries in the world". ("Fertile" means land where it is easy to grow crops.) Many of the socialist Zionist groups were more territorialist than Zionist, such as Nachman Syrkin's Zionist Socialist Workers Party (the Z.S.).