Homeless German refugees live on the streets of Germany and crowd onto a passenger train which will take them out of Ger

The video discusses the migration of people to Allied West Germany in the post-war years. It highlights the challenges faced by migrants, including long, overcrowded train journeys. Despite the hardships, many returned to their homeland.

What challenges did migrants face during their journey?

What does the phrase 'they came back' imply in the context of the text?