What is the difference between All the area vs All the areas?
Napoleon Bonaparte’s ambition to control all the area around the Mediterranean Sea led him and his French soldiers to Egypt.

What is the difference between All the area vs All the areas?

I think All the areas is right because the word area is countable noun and after the word 'all', plural nouns come.

Question

What is the difference between All the area vs All the areas?
Napoleon Bonaparte’s ambition to control all the area around the Mediterranean Sea led him and his French soldiers to Egypt.

What is the difference between All the area vs All the areas?

I think All the areas is right because the word area is countable noun and after the word 'all', plural nouns come.

Answer

It isn't a case of using rules. Think about the meaning. Since he wanted to control that area - it was one area - his potential empire. How would you split it into different 'areas'? 
He wanted to control the entirety of the area - he wanted to control all the area. Perhaps the missing 'of' is what is confusing?
I want to eat all the apple. I don't only want half. 
The spilt drink covered all the table.
You would only use 'areas' in that sentence if it was clear what the individual areas you were referring to were.

Answer

Nice question   no really just habit  plzz  tall me  r/ w