The gap between two mountains is called Saddle.
The Battle of Salamis I'm pretty sure . It was a naval battle which was won by the Greek allies against the Persians.
Mestizo aka a mutt , the word comes from spain
Its a bad idea, because you are taking the saltwater marsh away from the ecosystem... And turning it into a cement covered ground, for more houses... Then the animals (or other things) that live there, will die... and have to find another place to live...
~therefore... The bad thing is, that they shouldnt fill the marsh with dirt, and cement... Because bad things could happen to the creatures that already live there.