Which one of these major developments led to the other three ? a. growth of tenements and slums. b. shift from rural to an urban lifestyle c. rapid industrial growth d. widespread use child of labor

the triple alliance. germany and austria-hungary were already allies by 1879 when, worried about a threat from russia, they formed the dual alliance. italy joined the group in 1882. there was a concern about a possible attack from france and the alliance needed powerful friends to defend it.

martin luther believed that selling indulgences was wrong and gave people a license to sin. the roman catholic church used the practice of indulgences to raise money for major building projects.

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