Name at least 5 countries that became imperial powers and created huge empires during the 1800's and early 1900's?

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.

What did president johnson risk violating the tenure of office act to the fire of his secretary of war

When conducting research for forming a hypothesis, which practice should historians follow?