In the 1890s, U.S. maps showed the "Twin Territories": Oklahoma Territory and which other territory?

In July 1890, which territory, now famous for its potatoes, joined the Union as the 43rd state? Forced to resign by Kaiser Wilhelm II in 1890, which "Iron Chancellor" retired to his estate at Friedrichsruh? Penobscot outfielder Louis Sockalexis, who played in the 1890s, was said to have inspired which name for Cleveland's ba… Which artist's 1890s paintings include "Melancholy," "Jealousy" and "The Scream"? Which French artist painted "Street in Tahiti" in 1891? Which author (1892–1973) created the Undying Lands, the realm in the uttermost West to which the Elves sail? Tonio and Beppe are members of a troupe of traveling players in which 1892 opera? Which artist painted "Two Women Dancing at the Moulin Rouge" in 1892?