when did the swine flu vaccine come out???

Answer: November 2009

Question: where did congress meet under the articles of confederation?

Answer: the Maryland State House

Answer this question: when was the last solid copper penny made??

1857

Q: when did the world population reach 7.5 billion?A: December 2017

Input: the first law of thermodynamics was developed by?

Output: Rudolf Clausius

Input: the best-case behavior of insertion sort is ____?

Output:
O(n)