WWI (1914-18) was known as the “Great War” because of the immense scale of the fighting. The immediate cause was the assassination of the heir to the Austro-Hungarian throne. But, the war was a...

If you're interested in learning about or teaching World War I, primary source documents are an excellent place to start. These documents provide a firsthand account of the events that took place...

Humans have less body hair than their great ape ancestors. Yet they still have a lot of body hair compared to many animals. There is a lot of diversity among mankind regarding body types. This...

A monarchy is a type of government where the authority to rule is held by one person.  Monarchs can be absolute or limited by constitutional rules and sometimes are mere figureheads.  This...

The Industrial Revolution is the name given to the transition from an agricultural and small-scale manufacturing economy to mass production using machine power. It began in Great Britain in the 1740s...

Federalism is a way to divide power between the central government (in Washington DC) and smaller local governments (states and cities). It's a big part of the United States Constitution, but other...