Australian Communist Party v Commonwealth Australian Communist Party v Commonwealth Australian Communist Party v The Commonwealth, also known as the Communist Party Case, was a legal case in the High Court of Australia described as "undoubtedly one of the High Court's most important decisions." In a general election held on 10 December 1949, Prime Minister Robert Menzies led a Liberal-Country Party coalition to government pledged to dissolving the Communist Party of Australia. The Party had been banned before: following the Molotov-Ribbentrop Pact, the Party had opposed Australian involvement in the Second World War in 1939, which gave Menzies' United Australia Party-Country Party government the opportunity
British and French declaration of war on Germany propaganda to justify German expansionism). Two Western powers, the United Kingdom and France, gave guarantees to Poland that they would declare war if Polish independence came under threat, as presented in a statement to the House of Commons by British Prime Minister Neville Chamberlain 31 March 1939 (formalized by the British 6 April 1939; not ratified until 4 September 1939 by the French): Although they honoured these guarantees by declaring war soon after Germany's Invasion of Poland on 1 September 1939, and although the dominions of the British Empire quickly followed suit, so little practical assistance was given to Poland,