HEL! What were the main causes of WW1?

There were many reasons but the main cause was the assassination of the then arch d.uke of Austria, Franz Ferdinand, by the Black Hand in 1914.

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he risk-return relationship. generally, the higher the potential return of an investment, the higher the risk. there is no guarantee that you will actually get a higher return by accepting more risk. diversification enables you to reduce the risk of your portfolio without sacrificing potential returns.

explanation:

according to worldatlas.com, the u.s. has an 86% literacy rate.