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The 19th century was an era of rapidly accelerating scientific discovery and invention, with significant developments in the fields of mathematics, physics, chemistry, biology, electricity, and metallurgy that laid the groundwork for the technological advances of the 20th century.
- Siglo XIX - Wikipedia, la enciclopedia libre
El siglo XIX d. C. ( siglo diecinueve después de Cristo) o...
- Timeline of the 19th century - Wikipedia
1821–1830: Greece becomes the first country to break away...
- Victorian era - Wikipedia
In the history of the United Kingdom and the British Empire,...
- Long nineteenth century - Wikipedia
The long nineteenth century is a term for the 125-year...
- The United States in the 19th century - Simple English ...
References. Other websites. The United States in the 19th...
- 19th century - Simple English Wikipedia, the free encyclopedia
19th century. The 19th century was the century from 1801 to...
- Siglo XIX - Wikipedia, la enciclopedia libre