Translate the following English sentence to French:
"Finally, the reason why sport has assumed an important and indeed a central place in our contemporary societies is perhaps because it has become the only means open to a nation to demonstrate its greatness."
Enfin, si le sport a pris dans nos sociétés contemporaines une place importante, voire centrale, c'est peut-être parce qu'il est devenu pour une nation, le seul moyen de montrer sa grandeur.