Similarities: the north Koreans and the Vietcong were communist, the Russians back both the north and south. Both are examples of the US following it's containment policy.
difference: Vietnam was dense jungle warfare.
I am pretty sure it's D. A market that has only one seller of a product and the seller can influence the price of the product.
If this is wrong, please tell me.
Hope this helps you! :)
They wanted very little change so there for the answer would be C- They wanted very little change
The answer is "their religion"