Why did West Africa's largest cities arise near or on the coast?

one technique that i believe me is one such as soapstone. it's a docement that allows writers of all kinds such as age and level of knowledge to comprehend. this can be what is soapstone?

s- speaker.

o- occasion

a- audience

p- purpose

s- subject

tone- authors way of speaking, his attitude or meaning. basically his tone. is he upset, mad, happy, confused as he read or writes the story.

this can be remembered because it's easy and small, short, and has meaning. it's easier to write and remember by having acronyms then struggling having no acronyms with long words.