What was the economic impact of the black death on serfs in medieval europe

Which two sets of political ideas speed as a result of the worldwide depression of the 1930s

Which 19th century technological advancement would best allow farmers along the mississippi river in iowa to quickly transport their crops to buyers in louisiana?

In at least two paragraphs, discuss the differences between the principles of republicanism and democracy. explain whether you think the united states is more of a republic or a democracy. refer to at least one example from the constitution. (10 points)