What was the most important trait of the maya empire

What were the 2 main reasons why the chinese came to america ?

All i need is an outline i need with getting started with a research paper. i need with an outline for history of slavery. i don’t know how i should start it end. i need with an outline.

    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