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Czechoslovak cause: During his exile, Masaryk tirelessly promoted the Czechoslovak cause, advocating for the independence and self-determination of the Czech and Slovak peoples. He rallied international support, established diplomatic contacts, and organized resistance movements to challenge Austro-Hungarian rule. Masaryk's efforts played a crucial role in the eventual dissolution of the Austro-Hungarian Empire and the establishment of Czechoslovakia as an independent nation in 1918.