【答案解析】
Germany declared war on Russia on August 1 and on France on August 3, and invaded Belgium, the shortest route to Paris, hoping to win a quick victory in the West before turning to face Russia. Britain was afraid that Germany would overrun Europe and gain control of parts of the British Empire. This, together with an earlier treaty which promised to guarantee Belgium’s neutrality, brought Britain into World War I on August 4, 1914。
