 Explain two results due to the changes in agriculture in Imperial China.

 Compass  Used by the song dynasty for navigation at sea  Better ships  Watertight sections in order to isolate leaks  Paddlewheel boat  Increased travel across lakes and rivers  Segmental arch bridge  Smaller arch than Roman design, used less materials and was stronger.

 Paper (2 nd century)  Early paper made of tree bark and later cloth  Huge impact on China & the world  Printing  Woodblock printing (7 th century) Like a stamp  Movable type (11 th century) Individual characters made of wood that can be arranged to create a job for printing & then used over again. Made printing cheaper which led to more books being printed.

 Porcelain(1 st century)  Hard waterproof pottery (Also called China)  Mass produced: Creating a good in large numbers  Steel (5 th century)  Stronger than iron but easier to work with  Difficult to mass produce and expensive

 Gunpowder (850 C.E.)  Alchemy: Mix of science, magic and philosophy  Early Weapons with gunpowder Flamethrowers, Rocket launcher  Catapult  Sling shot war machine able to throw objects great distances

 Created a number of objects we use everyday  Playing Cards  Paper Money  Mechanical Clock

 Infectious Disease: Spread from person to person  Ways to fight Infectious disease  Steaming clothes people that are sick  Inoculate: inject/consume small amount of disease  Vaccines: a substance used to protect against a disease.