Which philosophy was used primarily within the qin dynasty

Which of these events was a severe setback for the u.s. war effort in the pacific?

    which of the following was anecological  result of european exploration from 1400 to 1800?   a.  increased trade with east asia      b.  the spread of epidemic diseases      c.  expansion of english territory      d.  the spread of christianity

Which statement best describes why henry adams was beaten