Final answer:
Migration has affected the character of places in many large cities in Europe by introducing new cultural influences and diversity.
Step-by-step explanation:
The character of places in many large cities in Europe has been affected by migration through the introduction of new cultural influences and diversity. As immigrants move to cities, they bring their customs, traditions, and practices from their homelands, creating a more diverse and culturally rich environment. These new influences can be seen in the emergence of ethnic communities, new newspapers, shops, celebrations, and even changes in food and language.