Short answers, pulled from the story.
The term Cisleithania means on this side of the Leitha River from a Viennese perspective. It derives its Latin name from the Leitha River which flows southeast of Vienna to mark the historical boundary between the Archduchy of Austria and the Hungarian Kingdom.
The official name gained status only in 1915 when it was formally adopted by law. Before that year politicians and bureaucrats used the phrase Die im Reichsrat vertretenen Königreiche und Länder while the press called the area simply Austria.
The territory covered 28,571,900 people according to the 1910 census. This population included fifteen crown lands stretching from Vorarlberg in the west to Galicia and Bukovina in the east.
Direct election of the House of Deputies began in 1873 with a four-class franchise system where only male landowners and bourgeois could vote. Universal male suffrage arrived much later through an electoral reform on the 4th of March 1907.
Nearly 60% of Cisleithania's residents were ethnically Slavic according to census data. Czechs accounted for 22 percent while Poles represented 15 percent of the people.