The use of CFCs <span>does not contribute to increased air quality. </span>
Religious and ethnical problems.
It was one of the largest empires of the world with many different ethnicities. The problem was to unite people under one rule.
Another problem was communication. It was hard to transfer knowledge and news to all parts of the empire because it was too large.
The earth has endured ice ages , drought, storms, and flooding, it can cause illness and death as well as damage to homes
The Russian Empire in 1917, the German and the Austro-Hungarian in 1918, and the Ottoman in 1922 were all ended in WW1.
