<h2>
Answer:</h2>
For protection, medieval castles often had moats and tall, thick walls surrounding it.
<h2>Helpful:</h2>
Each describing word needs a comma in-between them.
Or at least I think they do.
In most cases, you also put the word "and" right before the last describing word in the sentence of them.
<h2>
Examples:</h2>
I like black, orange, and yellow shades of color!
My best friend likes the colors black, and yellow, but I like orange, and white!
<h2>
Extra:</h2>
I hope my answer helped you, and that you will read all of it, along with use the "Helpful:" section for the rest of your assignments.
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Thanks in advance.
Sincerely,
Kai "Brainliest" Pro