What major mistake producers made when editing the battle scenes for star wars

look up "the disappearing knife scene" in the recent starwars movies

Explanation: Aswell as a breakdown of "the throne room scene"

In star wars the force awakens you can see the camera operators on Captain Phasma's helmet

Explanation:

this really isn't a battle mistake but I guess its a mistake lol.

the factors that the economies of the muslim empires prosper were:

1- land trade routes-located between three continents  

2- sea trade routes

trade contributed to the spread of muslim empires, and with that islamic culture led to a growing feeling of internationalism resulted in the transfer of technology, science, and other cultural forms.