Covers one half of the earth is not a characteristic because deserts simply do not cover half the earth
Caspian Sea is what I got
The main reason is that the USA is in the Northern Hemisphere & Australia is in the Southern Hemisphere. It has all to do with the tilt of the earth as it revolves around the Sun. Summer happens in the hemisphere tilted towards the Sun, and winter happens in the hemisphere tilted away from the Sun.
D ..at the end of the construction of the canal it was estimated that 22,000 died during the earlier french effort to build the canal.
