All the themes of both "Kaddo's Wall" and "The Magic Prison" are as explained below.
1) A theme of both "Kaddo's Wall" and "The Magic Prison" is;
If you are selfish you may find your self alone and without help
2) Supporting details from the text are; "The corn is mine. It is my surplus. I can't eat it all. It comes from my own fields. I am rich."
3) The way those details develop or support a theme of the stories is that; Kaddo's grandchildren and great-grandchildren in the Kingdom of Seno are poor to this day. And to the rich men of the country the common people sometimes say: "Don't build a wall of flour around your house."
4) Explanation with strong paragraphs are; Kaddo's grandchildren and great-grandchildren in the Kingdom of Seno are poor to this day. And to the rich men of the country the common people sometimes say:
"Don't build a wall of flour around your house."
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