Expellee organizations in West Germany pushed for restoring prewar borders, but their aims were undermined by the consolidation of postwar frontiers and West Germany's acceptance of them as part of European integration and détente. This acceptance was gradual, influenced by Cold War realities and the need for reconciliation with neighbors like Poland and Czechoslovakia. By the 1950s, policies like the Ostpolitik began to normalize relations, making territorial revisionism less viable. Choice B best captures this development, which prioritized stability over revanchism. Choices like A or D misstate history, as the Soviet Union did not collapse early, and the Warsaw Pact reinforced existing borders. This shift reflected broader postwar efforts to prevent nationalism from sparking new conflicts in Europe.

The Greek conflict in 1946 evolved into a civil war between communist-led forces, who drew on wartime resistance against fascists, and nationalist-monarchist groups, with foreign aid shaping the outcome. This became an early test of U.S. containment policy, as American and British support helped defeat the communists. The division reflected legacies of occupation and ideological splits, not purely ethnic or religious issues. Choice B situates it correctly within Cold War interventions and resistance histories. Alternatives like A or C mischaracterize it as a decolonization war or religious strife, which it was not. The war's resolution reinforced Western alliances in the Mediterranean amid emerging bipolar tensions.

NATO's 1999 intervention in Kosovo was justified primarily as a humanitarian effort to halt large-scale ethnic violence, forced expulsions, and atrocities by Serbian forces, marking a shift toward intervention without UN approval in cases of severe human rights abuses. This rationale emphasized protecting civilians amid the Yugoslav wars' legacy of ethnic cleansing. It contrasts with option A, which wrongly links it to reversing Yalta agreements, ignoring the post-Cold War context. Options C, D, and E misrepresent motives: there was no colonial expansion, no religious conversion policy, and no border closure agenda. Pedagogically, this action set precedents for 'responsibility to protect,' influencing later interventions like Libya. It highlighted tensions between sovereignty and human rights. Overall, it reflected evolving international norms on genocide prevention.

The Algerian War connected to postwar European nationalism through the struggle over imperial identity and decolonization, as France grappled with losing a key settler colony, leading to domestic polarization, violence by groups like the OAS, and debates on French citizenship. This conflict provoked terrorism and repression in metropolitan France, reflecting broader challenges in shedding colonial empires. Unlike option B, it was not about mercantilism or tariffs, but political and cultural identity. Options C, D, and E are inaccurate: the UN did not collapse, there was no peasant revolt imposing feudalism, and no restoration of Napoleon III. Instead, it exemplified how decolonization fueled nationalist violence, influencing events like the May 1958 crisis. Educationally, it shows imperialism's domestic repercussions, paralleling Britain's Suez Crisis. Ultimately, it accelerated France's shift to a European focus.

The expulsions of ethnic Germans from Poland and Czechoslovakia after World War II were part of a broader shift toward ethnonationalism in postwar Europe, where new borders and population transfers were seen as necessary to create stable, homogeneous nation-states and prevent future conflicts arising from minority grievances. This development was encouraged by the Allied powers at conferences like Potsdam, which sanctioned the orderly transfer of German populations to avoid the ethnic tensions that had fueled Nazi aggression. Unlike the Wilsonian ideals of self-determination and minority protections emphasized after World War I, the postwar period prioritized pragmatic solutions like forced migrations to resolve lingering territorial disputes. Option A is incorrect because the League of Nations was largely defunct by 1945, and plebiscites were not widely used in these expulsions. Options C, D, and E misrepresent the historical context, as there was no collapse of Soviet influence, no pan-European federalism, and no Vatican-led program driving these actions. Instead, the expulsions reflected a desire for ethnic purity amid the ruins of war, often justified by collective guilt for Nazi crimes. This trend marked a departure from interwar multiculturalism toward more rigid national identities.

The correct answer is B. The editorial accurately anticipates the rise of right-wing populist movements across Western Europe that would gain electoral strength by linking immigration to cultural threat. Starting in the 1980s and accelerating through the 1990s and 2000s, parties like France's National Front, Austria's Freedom Party, and others built support by arguing that Muslim immigrants from Turkey and North Africa threatened European cultural identity and values. These movements redefined national belonging in ethnic and cultural terms rather than civic ones, demanding stricter citizenship requirements, opposing multiculturalism, and calling for reduced immigration. The editorial's warning about parties gaining votes through anti-immigrant rhetoric proved prescient, as these movements moved from the political margins to influence mainstream politics, forcing traditional parties to adopt harder stances on immigration and integration.

The correct answer is A. The critics' argument reflects how postwar justice proceedings in Eastern Europe were deeply intertwined with communist state-building and political consolidation. While ostensibly prosecuting wartime collaborators, Soviet-aligned governments used these trials as tools to eliminate political opposition and consolidate single-party rule. By labeling rivals as "fascist collaborators," communist regimes could legally suppress non-communist parties, silence ethnic minorities who might challenge the new order, and seize property from class enemies. This manipulation of justice for political ends was particularly effective because genuine collaboration had occurred during the war, allowing regimes to blur the lines between legitimate prosecution and political persecution. The selective nature of these trials - targeting some groups while protecting others based on political utility - reveals how justice became subordinated to ideological and power considerations.

The correct answer is C. The tensions described in 1961 Yugoslavia - between official proclamations of "brotherhood and unity" and underlying ethnic grievances - foreshadowed the violent breakup of Yugoslavia in the 1990s. While communist ideology temporarily suppressed nationalist expression through authoritarian control and emphasis on socialist modernization, it failed to resolve fundamental ethnic tensions between Serbs, Croats, and other groups. The Croatian writer's complaint about Serbian dominance masked by federal policies proved prophetic. When communist authority weakened after Tito's death and especially after 1989, these suppressed nationalisms reemerged with devastating force, leading to wars of succession, ethnic cleansing, and the violent fragmentation of the Yugoslav state into separate nation-states based on ethnic identity.

The correct answer is C. After World War II, the failure of interwar minority protection treaties became painfully evident - these treaties had not prevented Nazi Germany from exploiting ethnic German minorities as pretexts for territorial expansion (like in the Sudetenland). In response, Allied powers and European governments adopted a brutal but pragmatic solution: forcibly moving populations to create ethnically homogeneous nation-states. This policy of population transfers, though causing immense human suffering, was seen as preventing future irredentist claims where one country demands territory based on ethnic minorities living across borders. The expulsion of ethnic Germans from Poland and Czechoslovakia exemplified this approach, as leaders believed that eliminating minority populations would remove potential sources of future conflict.

The 1950 French editorial argued that integrating West Germany into European institutions would curb revanchism by fostering supranational cooperation, reducing the appeal of territorial nationalism. This integration aimed to bind economies and politics, making borders less central to conflicts and promoting reconciliation. Critics worried about rewarding aggression, but proponents saw it as a path to lasting peace. Choice A supports the claim by explaining how cooperation constrained ethnic tensions rooted in borders. Options like B or C are incorrect, as integration did not restore colonies or abolish governments. This rationale underpinned the early European project, helping stabilize postwar Western Europe amid lingering nationalisms.