How did the abbasid dynasty differ from the umayyad dynasty?

-what is one question you might ask after reading the fred munguia's story?

What explains the increase in life expectancy in botswana? a. the increased availability of jobs and an improved economy b. access to antiretroviral drugs, hiv/aids education, and widespread hiv/aids testing c. a series of military takeovers that stabilized the political system and led to education reform and increased literacy rates d. a recent military coup that led to an improved healthcare system select the best answer from the choices provided.

What were some effects in world war 1 in europe ? ( and only in europe)