Explain why Muslims found it fairly easy to expand their empire throughout the East. Why did non-Christians in the East view the Muslims as liberators?

D. coal i hope that

When a lake, river or other aquatic  system  becomes  eutrophic, it can have serious negative effects on other organisms like fish, birds and even people.if an algal bloom is so bad that it causes wide-spread death  in  the  water, the organisms that die will all sink to the bottom and start to decompose.

The 3rd one