The Printing press was revolutionary
inventions of the middle ages
The Coffee House was ahead of its time
inventions of the middle ages coffee
The heavy plow led to the Agricultural Revolution
Verge escapement/mechanical clocks replaced hourglasses
inventions of the middle ages clocks
Paper 'money' is older than you think
The hourglass was a great way of keeping time
inventions of the middle ages hourglas
Gunpowder changed the world
The blast furnace first appeared in Switzerland and Germany
