Television
Television became one of the most important sources of entertainment to families since its invention, and it is still. virtually all families in the developed world owns a television and it virtually replaced the roles of theaters.
Equilibrium is the point where supply and demand meet and the prices are set. Because the price is set as equilibrium (where supply and demand meet), there won't be an excess of either. However if you set the price above equilibrium, you move away from equilibrium and have disequilibrium which can create excess supply or excess demand.
The correct answer is Quorum. The term is used all over the world in all types of parliaments, from high politics to simple things like municipal governments. The quorum size changes based on the type of legislature, since changing the constitution for example requires a larger quorum than changing normal laws.
The Holocaust was a mass murder of Jews but it was during WW1 I believe…
