International migratory movements their causes and consequences

Migratory movements have always been human tragedies. Throughout history there were migrations whose causes are varied. At the present time, the number of displaced people worldwide reflects the real dimension of this problem. According to the United nations Refugee Agency UNHCR (Office of the United Nations High Commission for refugees), by the end of 2016, the worldwide number of displaced people had risen to 65.6 million - more than the population of the United Kingdom...