3 IGCSE History resources Search within results Go How ratings and recommendations work Apply Filter resourcesClear all filtersLevelClear filter IGCSE SubjectClear filter History Exam board CIE TopicClear filter How had international peace collapsed by 1939? Road to WW2 Why had international peace collapsed by 1939? Resources Mindmap Road to WW2 IGCSE, History Mindmap Why did war break out in 1939? IGCSE, History Mindmap Road to WW2 IGCSE, History Mindmap Search again