Economies began in d) ancient times, with the Sumer and Babylonians starting trading, etc.
Explanation:
The muscles of the small intestine mix food with digestive juices from the pancreas, liver, and intestine, and push the mixture forward for further digestion. The walls of the small intestine absorb water and the digested nutrients into your bloodstream.
I think it is the answer A: Stability .....
<span>The Asiatic Huns were also known as the Xiongnu.</span>