What did the m6.9 earthquake in yellowstone trigger?

What was the most difficult obstacle to overcome in the creation of an autonomous state after indian independence was achieved? a british willingness to go to war to retain the region b. religious differences between hindus and muslims c. ethnic differences between tribal regions d. indian princes' inability to decide on a format of government

Lines of longitude are like stripes from the top of the globe down to the bottom virtually slicing the earth like an orange

What was the great rift valley formed by