The dragon backbone pump was a portable deivce, used for scooping up water, that the chinese improve their farming.
true or false

56: 58 the assembly line was a system through which items were mass-produced in a flow.

During the 1920s, many people looked for ways to maintain traditional social order as the nation rapidly moved into a new, modern era. which groups or types would most likely be in this category?

What did hiram rhodes revels argue for in the senate