The correct answer is China i found this in my social studies book, trust me its right

An adaptation of the epithelial cells of the proximal civilities tubule for reabsorption is

Friendly intercourse; reciprocal exchange of civilities; especially, intercourse between persons by means of letters., The letters which pass between correspondents., Mutual adaptation, relation, or agreement, of one thing to another; agreement; congruity; fitness; relation.

"Exchange of civilities" is a literal English equivalent of the French phrase échange de civilités. The pronunciation will be "ey-shawnzh duh see-vee-lee-tey" in French.

Friendly intercourse; reciprocal exchange of civilities; especially, intercourse between persons by means of letters., The letters which pass between correspondents., Mutual adaptation, relation, or agreement, of one thing to another; agreement; congruity; fitness; relation.