Muhammad is the founder of the religion of Islam and he had a tolerant view towards Judaism and Christianity. People of those religions were considered "people of the book" and were given dhimmi status under Muslim rule. Muhammad viewed Judaism and Christianity as root monotheistic religions of the newer monotheistic religion to come, which was Islam.
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
The answer is "theory". It's a possibility that's neither fact or opinion.