The United States and Mexico have developed deeper ties in recent years because they O A. signed free trade agreements. O B. refused to trade with other countries. O C. fought together in foreign wars. O D. reduced their economic ties to Asia.

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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.