I believe that the answer to the question provided above is that that tertiary and quaternary periods have greater resolution in their subdivisions (epochs) than the periods composing the paleozoic era because of the sudden changes of the <span>tertiary and quaternary periods it is subdivided.</span>
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It's the language barrier since Persians and kurdish people speak different languages Islam changed shia and sunni....
<span>The right to make and enforce laws is characteristic of a "sovereign" political unit, since in order to do this the power in question must be respected (either through acceptance or force) by the general population. </span>
What timeline? Did you post it?