The article discusses European emigration from 1815 to 1930, focusing on various aspects such as economic changes, emigration regions, return migration, and assisted emigration. It explores how emigration impacted urban growth, the economy, and family dynamics. The researchers analyzed historical sources to understand the reasons behind emigration and its effects on society. They found that emigration played a significant role in shaping Europe during this period, leading to both positive and negative consequences for the regions involved.