In the 1900’s, what best describes the impact of immigration on Europe?

In the 1900s, immigration had a significant impact on Europe, particularly following the two World Wars. Millions of people migrated to Europe from various parts of the world, including Eastern Europe, Asia, Africa, and the Middle East, seeking refuge, better economic opportunities, or to reunite with family members. This influx of immigrants played a crucial role in rebuilding war-torn European countries, contributing to economic growth and cultural diversity. However, it also led to social tensions, discrimination, and xenophobia in some European countries. Overall, immigration in the 1900s reshaped European societies and had both positive and negative impacts on the region.