Reply Across Your advice arrives before hindsight. Two envelopes take you to Canada in 1992 and India in 1956, when the next arrangement was still contested. In Reply Across, recommend a proposal, preserve what you expect, answer an objection and later reopen your prediction beside the historical record. Compare federal powers, internal minorities and the categories used to count people—then decide which parts of your explanation can travel. A narrative simulation for students with a basic introduction to nationalism. About 45–60 minutes, with an optional ten-minute Spain postscript comparing Catalonia and the Basque Country. Save and print your addressed reply. Created by Yoav Duman.