22% of Curriculum and Exam 54 works
From the mid-1700s to 1980 CE., Europe and the Americas experienced rapid change and innovation. Art existed in the context of dramatic events such as industrialization, urbanization, economics upheaval, migrations and wars. 
~College Board
Content Area 4 - Catalog of Images Content Area 4 - Khan Academy link Form, Function, Content and Context Art Analysis
Predominant Styles -  20th Century
Fauvism
Cubism
Prairie Style
Expressionism
Dada
Neoplasticism/De Stijl and Bauhaus
Surrealism
Soviet Avant-Garde
Latin American and African American Art
Abstract Expressionism
Hard Edge or Post Painterly Abstraction

Read chapter 3.8 from Gateways to Art - Understanding the Visual Arts