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SS 2.3
Time Lines and Westward Expansion
| Term | Definition |
|---|---|
| explorer | a person who goes to a new place to find out about it. |
| frontier | the far edge of a county where new people are just beginning to settle. |
| pioneer | The first group of people to settle in an area. |
| territory | an area of land owned by a country. |
| sphere | a round object, like a ball. |
| hemisphere | one half of earth, or another sphere |
| prime meridian | an imaginary line that runs from the North Pole to the South Pole through Greenwich, England. |
| equator | an imaginary line halfway between the North Pole and the South Pole. |
| time line | a list that tells the order of important events |
| year | any period of 12 months. |
| decade | ten years |
| century | one hundred years |