I googled it and it said 50-100 billion
<span>Constantinople is it spelled right???</span>
Answer: If it's in your opinion, then no. But if it's somebody else's opinion that you don't agree with, then you do have to cite your sources.
I hope that makes sense!
In 1794 an uprising of farmers and distillers in Pennsylvania became known as the Whiskey Rebellion
The answer is the Shang period