not 1 or 2 so assuming its 3
The U.S was determined to contain the spread of Communism by aiding weak countries trying to resist the Soviets.
<h2>Answer:</h2>
The rapid decline of the Russian Orthodox Church results in the Mongol conquest of Russia.
After that the people of the Russia were forced to follow the traditions, culture and rituals of Mongol. This miserable condition leads to the condition when they starting losing control of their society and it was the darkest period of Russian Orthodox.
So, due to the decline of the Russian Orthodox Church it happens.
