5. Concerns about China’s economy have recently dragged down global financial markets, affecting prospects for the eurozone and many others. Such worries are one reason why the European Central Bank is expected on Thursday to unleash a new round of economic stimulus.
6. Refugees from Syria, which has been torn apart by a five-year-old civil war that has left over 200,000 people dead and millions more displaced, account for half of all those counted, followed by refugees from two other war-torn countries, Afghanistan and Iraq.