What mexican state is directly south of Edinburg tx?

Hidalgo.

Explanation: It is bordered to the southwest by Granjeno; to the west by Mission, Palmhurst, and Alton; to the north by Edinburg, the Hidalgo county seat; to the east by Pharr; and to the south by Hidalgo.

true. earthquakes are felt whenever there is a slip around a fault in the rocks below the earth. this reorientation of faults create sesmic waves and is known as earthquake, the severity of which is measured in richter scale. these are more prominent in hilly regions as the rocks usually form faults to balance the pressures on it.