It definitely takes a lot of guts to go to foreign land to learn new language and way of life. In Aus today, there are many young Thais are doing just that without proper visa. Many are also exploited by employment sharks who put them to work like slaves but pay them little (much less than the 'standard rate' of about AUD17/hr or ~500 Baht/hr).
I wonder if the situation in Germany would be better for Thais and Africana and ... who found their way in. Perhaps the world is much more cruel today.