(Chapter 8 - Section 1 World War I was a catastrophe that was many years…
(Chapter 8 - Section 1 World War I was a catastrophe that was many years in the making.
, Chapter 10 - Section 1
The Great Depression caused widespread suffering, and it changed the way people thought about themselves and their government.
, Chapter 13 - Section 1
, (Chapter 4 - Section 2
New technologies began a transformation of society that has helped shape the world we live in today.
, Chapter 4 - Section 1 - Railroads transformed the economy and geography of the US in the late 1800's.