This was an example of Transcendentalism.
I hope this helps!
Leo III initiated a ban on the use of images for worship
Leo III accomplished many military milestones which made him popular and also gave him the confidence to pursue his religious policies. By banning the use of religious images, Leo II provoked a century of conflict within the empire
Containment is a geopolitical strategic foreign policy pursued by the United States. It is loosely related to the term cordon sanitaire which was later used to describe the geopolitical containment of the Soviet Union in the 1940s. The strategy of "containment" is best known as a Cold War foreign policy of the United States and its allies to prevent the spread of communism after the end of World War II.