Oh, for crying out loud. I'm not disagreeing that the Indians invented the zero. But you are hell-bent on not giving any credit to the Arabs for having shared the knowledge of zero (which they learned from the Indians) with the Europeans.
Given credit for what, really? It's not like some arab one fine day woke up and made it his life's mission to spread the knowledge of zero among the europeans. That kind of think just spreads naturally along trade routes! Sorry but you are the one fetishizing around the idea that "the arabs did this", whatever.
The two things "the arabs" did do intentionally were to conquer a big portion of the former byzantine empire, and to spread their own religion across that land. In that they acted pretty much as many other conquerors before and after. And it is true that had the arabs not conquered that land, then the persians, the byzantines, the mongols, or whatever people actually lived in that land would have done so. And btw, "the arabs" were not the actual population of Persia, you should probably say that the persians (or perhaps even the armenians) carried the idea of the zero from India.
As for the religion thing, a lot could be speculated about wether ih contributed to turning the mediterranean mostly from a unifying trade route to an area of division and near-constant warfare for 10 centuries. And keeping slavery into European thought, even as it declined first across western and northern Europe, and later eastern Europe. The Mediterranean was the main area in Europe where warfare remained tied to enslavement. Does that, under your logic, mean that slavery is another "technology" the arabs should be credit with transmitting from the classical world? Or was it just an accident or circumstances and geography, as I believe?
We should try to avoid projecting on people and events from the past out political ideas and biases of the present.
At this point you're just trying to pick a fight. I'm looking at this from the perspective of an archaeologist/anthropologist. As I said previously (and which you appear to have totally missed), I don't approve of destroying cultural artifacts (which could be anything from a huge monument to the grocery list I wrote on a piece of scrap paper yesterday). The Ottomans chose to preserve at least some of the artifacts of the people they conquered. The Spaniards were all about "gimme the gold" and cared nothing that they were destroying artifacts that did mean something to the people they conquered.
That is entirely false, looking at historical evidence. In europe the spaniards did pretty much the same thing the ottomans would do in the byzantine lands: the ottomans converted churches to mosques, the spaniards mosques to churches. And that was in a land where the arab invaders had previously converted churches to mosques, and the christian preachers had converted pagan temples to churches, and the romans had assimilates local gods and shrines, and so on.
In the americas there are innumerable buildings and artifacts prom previous civilizations left standing, where those civilizations managed to build non-perishable buildings. They razed some, often out or a desire to rebuild rather that just dismantle. That was as it always is. You are bent on demonizing some conquerors, and promote others as (comparatively) virtuous, and being called out for lack of a rational basis for that.
Mmm nope. Italian city states maritime trade with the Ottomans did.
The wealth of the italian cities did not depend on trade with the ottomands. Their commercial privileges until the 15th century were mostly with the byzantines, and their trade with northern europe was possibly more important. Wool from Iberia and England was imported and worked in Florence, and the cloth reexported. Silk was acquired from the byzantines and traded, then the knowledge of how to make it locally was also obtained. Italian financiers got wealthy lending to the english, spanish, and french crowns. The Ottomans played a small role in all this, and later became a drain on the resources of Italy, though the constant warfare and pirate raiding across the mediterranian. In fact I (and this is my opinion) attribute Italy's relative decline after the 15th century to ottoman expansion in the Mediterranean.