This Should Help a Little:
A largely semi-arid belt of barren, sandy and rock-strewn land, the Sahel marks the physical and cultural transition between the continent's more fertile tropical regions to the south and its desert in the north. ... The Sahel also suffers from ethno-religious tensions, political instability, poverty and natural disasters.
A specific location or point on a map.
I know the rocky mountains are one.
The coldest place in the northern hemisphere is
Oymyakon, the hottest El azizia, the coldest place in the southern hemisphere is Antarctica , the hottest being Port Augusta
A representation function is a legislative based on the economic and social groups. Hope this helps. Have a great day.