Complex sentence: Davidson wrote that Goutte d'Or in Paris in 1948 "appears to have had" 5,720 North Africans and that the estimates of North Africans in 1952 were 5,500-6,400; it had been perceived to have become North African in the post-World War II period.
Split into simpler sentences: Davidson wrote that Goutte d'Or in Paris in 1948 "appears to have had" 5,720 North Africans and that the estimates of North Africans in 1952 were 5,500-6,400. It had been perceived to have become North African in the post-World War II period.