Improved transportation greatly affected farming since it allowed vital resources to be quickly shipped to the farmer, and for the farmer to export his goods far more easily to locations further away.
Germany had to pay $33 billion in reparations after World War 1.
The Second Great Awakening was a major religious movement in the U.S. that reached out to the unchurched and brought large numbers of people to a vivid experience of Christianity. They believed in the perfectibility of people and were highly moralistic in their endeavors.
Entangling alliances grew the small conflicts instantly.
When Austria-Hungary attacked Serbia for just the region of Bosnia-Herzegovina, automatically Russia and Germany were in the war.
