what in British history links these four countries? How does this help explain why people from these countries are among London's largest immigrant populations?

1.The majority of these are from outside Europe, often from countries with historical links to the UK. More than three million people - roughly a third of the immigrant population - come from Commonwealth countries such as India, Jamaica, Australia and Nigeria.

2.According to the United Nations, in 2019, the United States, Germany, and Saudi Arabia had the largest number of immigrants of any country, while Tuvalu, Saint Helena, and Tokelau had the lowest.

Explanation:

the historians cited in the article all agree with one another about the cause of the civil war. despite coming from different backgrounds and cultures, the historians agree that slavery was the root cause of the civil war. the fact that all these historiansgenerally agree with one another makes their shared viewpoints more reliable and valid, especially because the historians have different backgrounds and all work for the well-respected institutions of howard university, clemson university, and the university of colorado.