Magnesium and calcium have similar chemical properties because they have the same number of electrons in their valence shells.
First solve this problem 2 7/8 - (-3/20)
Since then the Great Wall was built, rebuilt to protect the northern borders of the Chinese Empire from the Hun's and Mongolian attacks during the rule of successive dynasties.
The answer is
D. King Phillip II (the second)
I think the answer is c. contemplative