They observed and shared ideas
The the Byzantine Empire tolerated Christianity this led to greater unification in the empire since many regions that had previously been persecuted were free to engage with society.
Answer:
The immediate cause of World War I that made the aforementioned items come into play (alliances, imperialism, militarism, nationalism) was the assassination of Archduke Franz Ferdinand of Austria-Hungary. In June 1914, a Serbian-nationalist terrorist group called the Black Hand sent groups to assassinate the Archduke.
Answer:
The Depression affected politics by shaking confidence in unfettered capitalism. That type of laissez-faire economics is what President Herbert Hoover advocated, and it had failed. As a result, people voted for President Franklin D. Roosevelt (FDR).