It was primarily "<span>d. the vulnerability to invaders from the north", since the Mongol territory was rapidly expanding--making the Mongol warriors all the more powerful. </span>
Answer: Pick the first one, has a lot of info you can write about. Search up information about it to help you. You can say that credit cards have money in them. And say more stuff about the, like how they work
Be divided into four occupation zones
Answer: Battle of Stalingrad Period is
August 23, 1942 – February 2, 1943
hope this helps