It would be because the world war 2.
After the world war 2, Germany's territory was divided into two block with different Ideology, the East German with communism ideology and the West German with the liberalist Ideology. They both build a wall called the Berlin wall to separate the two territories
C the size of glaciers in alaska
The correct answer is - temperature.
We see the stars on the night sky in multiple colors, and the variation in the colors of the stars comes from the differences in temperature. The cooler a star is, the more reddish it appears, the hotter the star is the more blueish or whitish they appear. From cool to hot, the stars can appear in the variations of red, orange, yellow, green, blue/white colors, and it is an easy indicator of the temperature of them.
I believe they are both located near active volcanos :)
