Israel is seen as the center point of the earth.
Israel is like an umbilical cord or ladder which connects between
the upper and lower spiritual levels, because all the sustenance
to the whole world flows through the Gateway of heaven above the
Temple Mount through the Land of Israel to the 70 angels of each
of the 70 nations.
Israel is the center point of sustenance for the 70 nations.
[For a list of 70 nations see Bereshis/Genesis 10-11.]
Levels of sustenance in times of destruction (exile) vs. times
of Ingathering of Exiles and Redemption: