Hi !
France is a multicultural country. Martinique, Guadeloupe are French departments over-seas, and Morocco, Tunisia have been french colonies. Algeria got its independence in 1362 only.Madagascar had had a French protection as well.
Those countries have or had strong relationships with France and some people have chosen to live in France.
But on market places, you will also find African, Asian,.... products !!!
sorry I made more than two sentences...hope I helped anyway !!
Au is the answer for the question
It is better to say
“Elle se peigne les cheveux »