Thomas Edison is considered one of the greatest inventors because he was responsible for creating and flying the first engine-powered plane
patenting more than two thousand inventions
inventing the first single-wire telegraph
developing worldwide phone communications

Patenting more than two thousand inventions

Explanation:

Thomas Edison was known for being one of the most prolific inventors of all time. During his lifetime, he pantented thousands of inventions, among them: 389 patents in the electrical sector, over 150 patents in the communications sector (both telegraph and telephone), and over 100 patents in the storage batteries sector.

American Revolution

Explanation:

In respect to historians Glenn Altschuler and Stuart Blumin in their essay, "Antebellum Politics as Political Manipulation," American school children of the antebellum period were given American history only up to American Revolution.

The American Revolution was an ideological and political revolution which commenced in colonial North America in the year 1765 and 1783. The American Patriots in the Thirteen Colonies conquer the British in the American Revolutionary War between the year 1775 to 1783 with the support of France, winning independence from Great Britain and establishing the United States of America.

Tensions break out into battle between Patriot militia and British regulars when King George's forces intend to destroy American military supplies at Lexington and Concord on April 19, 1775. The conflict rapidly grow into war, during which the Patriots and subsequently their French allies fought the British and Loyalists in the Revolutionary War.