Works Cited

Wheelbarrow Images

Image 1 Szczepanski, Kallie. “The Invention of the Wheelbarrow.” ThoughtCo, ThoughtCo, 30 Apr. 2015, www.thoughtco.com/the-invention-of-the-wheelbarrow-195264. Nov 17, 2025

Image 2 The Editors of Encyclopedia Britannica. “Han Dynasty | Definition, Map, Culture, Art, & Facts.” Encyclopædia Britannica, 28 Dec. 2018, www.britannica.com/topic/Han-dynasty. Nov 17, 2025

Image 3 Wikipedia Contributors. “Wooden Ox.” Wikipedia, Wikimedia Foundation, 7 Feb. 2025, en.wikipedia.org/wiki/Wooden_ox. Nov 17, 2025

Image 4 history, The Garden. “The Wheelbarrow… a Weapon of War?” The Garden History Blog, 28 Feb. 2015, thegardenhistory.blog/2015/02/28/the-wheelbarrow-a-weapon-of-war/. Accessed 17 Nov. 2025.

Image 5 CadNav. “Ancient Chinese Wheelbarrow 3d Model 3ds Max Files Free Download.” Cadnav.com, 2024, www.cadnav.com/3d-models/model-44399.html#google_vignette. Accessed 17 Nov. 2025.

THE SUSPENSION BRIDGE

Nova 1: Nova online, Suspension Bridge, November 2000

Nova 2:  Nova online, China Bridge, November 2000

Kiddle: Kiddle, Suspension Bridge Facts For Kids, 17 October 2025, at 11:18

The Seismograph

Image 01: Seismology Definition, History & Earthquakes. (n.d.). Study.com. https://study.com/academy/lesson/seismology-definition-history.html

image 02: Zhang Heng by Science Photo Library. (n.d.). Science Photo Gallery. https://sciencephotogallery.com/featured/zhang-heng-science-photo-library.html

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Gunpowder

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