What is the fine-grained topic of the following text: It is described as an adrenalised, emotionally gripping and resonant drama following the first year of World War II told through the intertwining fates of ordinary people drawn from Britain, Poland, France, Germany and the United States as they grapple with the effect of the war on their everyday lives. Only return the topic.
First year of World War II and its impact on ordinary people from various countries