There were four main causes of World War I. Militarism, alliances, imperialism and nationalism.<span> The first world war was a result of these four causes, but it was triggered by the assassination of the Austrian archduke Franz Ferdinand and his wife</span>
To take a stand on their opinions on slavery
The answer is Christianity. This was affected by groups of immigrations that integrated and combined
with the residents, going to a jumble combination of laws and civilizations.
Catholic Christianity did achieve to survive through the period, and did its
best to reserve the ancient knowledge, and then improve it.
The theory that the threat of nuclear war is enough to prevent an attack is called: Nuclear deterrent
The theory is based on the likelihood that every nations would fear a mutual destruction when initiating attack to countries that own nuclear weapon. Even if a country emerge victorious from a nuclear war, the damage that caused by opposition's nuclear would damage the environment of the victors for decades.
