What effects did the us senate's refusal to ratify the treaty of versailles have

Which of the following inventions most directly allowed ancient farmers to produce a surplus ?

Which of these would have been a goal of the ku klux klan in the south during reconstruction? a) registering more potential rural voters b) making sure reconstruction went smoothly c) assisting the scalawags and carpetbaggers d) restoring southern democrats to political power

What were some of the most important native items adopted by europeans ? what impact did they have on european life ?