>>2505130>>2505087Libs in recent times have greatly exaggerated the 'islamic golden age'. While the Arabs did contribute, they make it sound now like Europeans were dumb barbarians and Arabs figured everything out like mega-geniuses. Funny how they just inverted the previous narrative of 'europeans are divine geniuses and Arabs are barbaric warrior-tribes'. 
Even in the old days, there was a lot of circulation of information. In ancient times (before 500AD), most (not all) of the mathematical advances were in Greece, Rome, and India. In the 'classical' age (500AD-1300AD), the Arabs surged on the stage, with India still up there. As from 1300, India gradually fell far behind, Arabs stagnated and fell, while Europe surged forward. After the enlightenment, Europe was number 1. As from the Industrial Revolution, it was not even comparable anymore, Europe achieved unprecedented domination. To the point where one could only focus on Europe and disregard any insignificant Mathematical and scientific work produced elsewhere. 
Parallel to that, you had China, who also came up with much mathematical development in the ancient and classical age. But I consider them 'parallel' as there was lesser cross-pollination with the Indians, Arabs, Europeans because of the great distance between them.