NOTE: may be inaccurate. Feel free to photoshop your variants.
Historians of the medieval era hate the term “dark ages”, even in relation to Europe. The whole notion that the Roman Empire went poof one day and then everything sucked for 1000 years is just cartoonishly wrong.
Only a little unfortunate they skipped the enlightenment, akin to what Europe had.
Medieval people thinking the Earth was flat is a myth that was made up during the Age of Enlightenment.
Sorry what learning and expanding are you talking about? Can you please be specific about which years and give a source?
pretty much everything between ~600 and 1900 and pretty much everywhere from Morrocco to Turkey to Iran.
Just read up on Moors, Ottomans, Iranians, Mail Empire, Islamic culture, science and arts…
A lot of it in Palestine got destroyed by the savage European crusaders though.