The split happened back in the 7th century (700s), after Mohammed died in 632.
Answer: Observation
Explanation:
The scientific method is the way that facts are established. It takes a series of steps to prove a fact. This starts from making an observation, forming a hypothesis, testing it in an experiment and depending on the results, drawing a conclusion which may prove the theory right or wrong.
Sachiko sees a relationship between open umbrellas and small car accidents. this is just an observation and if she wants to declare it as a scientific fact, it needs to undergo all the listed steps mentioned above.
The war started mainly because of four aspects: <em>Militarism, Alliances, Imperialism and Nationalism.</em> This is because big armies become potential threats to other countries, other countries started forcing alliances in order to secure land.
