Which of the following technologies were born or made commonly available during world war i?
select one:
a. poision gas
b. all of the above
c. telephone
d. movies
e. trans-oceanic flight

What refers to the division of power among the three branches of government

The northwest ordinance guaranteed three rights for the settlers of the northwest territory. what were they?

Which of the following lists correctly orders the earth's layers from its innermost layer to its outermost layer? a. mantle, inner core, outer core, crust b. crust, inner core, outer core, mantle c. crust, mantle, outer core, inner core d. inner core, outer core, mantle, crust