| A | B |
|---|
| Declaration of Independence | the document that declared the United States to be free from Great Britain |
| peak | the top of a mountain |
| United States Constitution | the plan of government for the United States |
| American Revolution | the war in which the American colonies won independence from Great Britain |
| canal | a ditch dug across land that often connects two waterways |
| lock | a water elevator used to raise and lower boats |
| mass production | a way of making large quantities of products |
| mill | a factory in which people make products out of raw materials |
| wage | a payment of money for work |
