1 GCSE Ancient History resources Search within results Go How ratings and recommendations work Apply Filter resourcesClear all filtersLevelClear filter GCSE SubjectClear filter Ancient History Exam board AQA TopicClear filter Which countries were involved in WW1? Resources Crossword Flashcards Multi-tool Quizsearch Which main countries took part in WW1? GCSE, Ancient History Quizsearch Search again