Answer:
D because the definition says so
The great depression lasted for 10 years
The Yalta conference was when Roosevelt, Stalin and Churchill decided to demand Hitler's unconditional surrender and began plans for a post-war world.
The Tehran conference was when the 3 above decided to put up a second front to the Nazi Germany.
Potsdam was when the 3 discussed terms for the end of WW2
The event that marked the end of the Byzantine empire would be the Fall of Constantinople, which happened in 1453
Explanation:
because nation holidies they will be a band to here families belonging and the different of persons work is a work hard and nothing to be connected to there love ones