I don't see the things i am supposed to check, but i will still answer your question. The most important reasons why WW1 started was because of Militarism, Alliances, Imperialism, and Nationalism.
Considering the gap in ages, I think parenting three generations were tough. They have different influences and understanding of society. <span>Baby boomers became more adaptive of the situation through experience. </span><span>As parents, they have learned much of the individualities both similarities and differences through experience. </span>
<span>Technology became a bridge for the three generations. Facebook had become successful of getting the Baby Boomers. </span><span>On a national level, the use of common websites is an ordinary routine for the three. </span>
The correct option is : 
The Event that happened before U.S. Constitution was adopted : -
Harvard College was founded
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O He was elected to many different positions and had a broad range of interests.
