when did the exchange of wedding rings begin???

Answer: 6,000 years ago
Question: who stars as claire underwood in the series house of cards?

Answer: Robin Gayle Wright
Answer this question: who came up with dominant and recessive traits??

Gregor Johann Mendel
Q: when did call of duty world war 2 come out?A: November 3, 2017
Input: when was the last episode of pretty little liars aired?

Output: June 27, 2017
Please answer this: who made the first rocket in the world?
Song dynasty China