Why doesn't this shared history tie people in the middle east and europe together?

...

They converted into several different religions after their empire was destroyed. At the very least, they all invaded germany twice.

Because Arabs.

Would've been great, the romano-moorish kingdoms were pretty Europe-tier but islam happened.

How large of an ethnic impact did the Islamic invasions have on the Middle-East and North Africa?

>tfw Bactria died before it could achieve absolute greatness
Imagine what we could have had.

this

I've always kind of thought that they were all closer to what the turks look like today so mostly white. The swarthy skin definitely comes from the more southern parts of arabia (i.e. mecca, medina). Makes you wonder what kind of people from that area would kill and rape their way across the middle east and north africa?

Not heavy since Islam itself based much of its culture off of MENA culture as a way to spread to the masses similar in a way the Rome used its culture to spread Christianity. But I'm being very brief. The large impact that islam had was that is split itself from Christianity and thus outcasted itself from ever being a formidable ally to any christain kingdom. They were just too different. Christendom is the actual basis of Europe and the EU. Every nation in the EU was one way or another a Christian state during the middle ages where the ME is still divided from Europe because of the long standing dispositions about religion, among other reasons of course.

would've been pretty neat desu