Answer:
The Mississippians were a native American culture that inhabited the Mississipi River Valley and surrounding areas from 9th till 16th century. Their culture was unique in that they created Mounds, that is man-made hills, many of them are still existing today.
Northern Ireland's Parliment opted out of becoming the Irish Free State. Northern Ireland wants to remain a part of the UK while the other part wants to become whole again.
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Philippine independence was declared.
