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AP US History
Unit 4 – American Expansion, 1800–1848
Topic 4.14
Which technological innovation significantly sped up communication across the United States during Period 4?
The phonograph
The telephone
The typewriter
The telegraph
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AP US History - 4.14 Causation in Period 4
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United States
Communication
Technological Innovation
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About Fiveable
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Terms of Use
Privacy Policy
CCPA Privacy Policy
Resources
Cram Mode
AP Score Calculators
Study Guides
Practice Quizzes
Glossary
Crisis Text Line
Request a Feature
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© 2024 Fiveable Inc. All rights reserved.
AP® and SAT® are trademarks registered by the College Board, which is not affiliated with, and does not endorse this website.
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