2015 saw over a million migrants and refugees make their way to Europe, fleeing war, persecution and poverty.
The reasons for the huge movement of people are many and complex - as are the reactions of people in host nations worried about perceived effects on security and infrastructure.
Here are nine Twitter accounts to follow to help you gain a broader understanding...
2) Yannis Behrakis
3) Harry Leslie Smith
4) Charlotte Alfred
5) Peter Bouckaert
Refugees stuck on uninhabited Greek island rescued just now. Thanks everyone. pic.twitter.com/jqYPBW32c4— Peter Bouckaert (@bouckap) December 21, 2015
6) George Butler
These are some of the drawings I did recently with Save the Children in Serbia/Macedonia of the refugee crisis... https://t.co/VGKQSCeMFZ— George Butler (@george_butler) December 21, 2015
7) MSF Sea
8) Patrick Kingsley
Despite it being December, there are also more boats than June. And many more lifejackets. pic.twitter.com/z1AGvGLqOn— Patrick Kingsley (@PatrickKingsley) December 21, 2015
9) Fabio Bucciarelli
The chart above shows the the origin countries of the 19,196 people who claimed asylum in the UK from January to July of 2015.