I believe it is C. Memorials to powerful former leaders
Alliances provide mutual support in the event of an attack; protecting security of entire regions; providing framework of military security through organizations such as NATO.
Explanation:
hope this helps:)
We really don't know if it was a hydrogen bomb or not. It is seriously doubted though because their are seismic detectors all over the world and the bomb wasn't as strong as it should have been. The U.S have said that the records that the bomb gave off was around a 4.8 magnitude event. A hydrogen bomb would've given off a 6.8. So their was definitely an explosion, but not as big as korea claims it to have been.
