C The Aztec Empire was conquered by Hernán Cortés in 1519
Mary Douglas Leakey was recognized in her lifetime as one of the world’s most distinguished fossil hunters. In 1974 Mary BEGINS work at Laetoli, 30 miles from Olduvai Gorge. It is here that Mary and her team found amazingly well preserved hominid footprints in volcanic beds, known as tuffs. The footprint tuff of 1976 has a potassium argon date of 3.5-3.8 mya, evidence of upright walking that supported Donald Johansen's find, Lucy, also known as Australopithecus Afarensis, though Mary Leakey has rejected this( she believe that the belong to the genus homo). Eighty feet of trail had been uncovered by 1979, leaving researchers to speculate that it was three hominids, possibly a family, that left their mark millions of years ago.
The business opportunity that first brought interested Europeans to the delta of the Niger River was the quick way to trade palm oil and spices.
The Niger River flows from East Africa thru West Africa. The means of transportation during that time was thru the use of boats and vessels from Europe need to stop at the port of the Delta of Niger River to enter deep into the continent.
A. Britain, France, and Russia
Hope this helps!
It was based on the supremacy of national government. hope this helps