The phenomenon is closely linked to nationalism and irredentism, as Finland had just won its national independence, and a part of the population felt that they had obligations to help other Finnic peoples to attain the same. Estonia, the closest and numerically largest "kindred nation", had gained its independence at the same time, but had fewer resources, fewer institutions ready to support its attained position, and more Russian troops within its borders. Other Finnic peoples were at a less organized level of cultural, economic and political capability. The Finnish Civil War had awakened strong nationalistic feelings in Finnish citizens and other Finnic peoples, and they sought tangible ways to put these feelings into action. For the two next decades, Finns participated at a relatively high rate in nationalistic activities (e.g. Karelianism and Finnicization of the country and its institutions). This development was related to the trauma and divisiveness of the Civil War. Many White sympathizers in the Civil War became radically nationalistic as a result of the war. The strenuous five-year period 1939–45 of total war—which also mostly unified the nation—reduced this enthusiasm.