I am pretty sure the answer is <span>d. all of the above.
Hope this helps</span>
Gobi desert; yellow sand; yellow river
<span>Ethiopia and Eritrea
</span>Eritrea became part of a federation with Ethiopia, the Federation of Ethiopia and Eritrea<span>. Subsequent </span>annexation<span> into Ethiopia led to the </span>Eritrean War of Independence, ending with Eritrean independence following a referendum<span> in April 1993. </span><span>
</span>