The answer is: Unrest in the Russian military and civilian population
At that time, Tsar Nicholas II was known as Nicholas the Bloody or Vile Nicholas. He's not afraid to execute all citizens or other government officials who dare to undermine his rule.
His actions created Unrest in the Russian military and civilian population and people's approval toward him kept plummeting as the years go by, until eventually he was abdicated during the revolution in 1917.
I think it's The Cassini-Huygens mission
Answer:
"Gold and silver from her massive American empire fueled Spanish dreams to wrest control of Italy and the Netherlands from France, and to spread Catholicism all across the world. And yet, 300 years later, the Treaty of Paris ended the Spanish-American War, and with it, the Spanish colonial empire died."
Explanation:
