28. In the 19th century, it _ two or three months to cross North America by covered wagon. The trip - very rough and often dangerous.

a. took / was

(b, had taken / had been

c. took / had been

d. had taken / was

In which region did much of the arab zone lie? a. asia b. africa c. the americas d. europe

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Which statements are true about Greenland? Greenland's borders are the U. S., Canada, and Iceland. Greenland's borders are the Atlantic Ocean and the Artic Ocean. Greenland is an island. Greenland is primarily grassland. Greenland is covered by ice.

Children who live with their grandparents seem to have higher rates of poverty and other problems in what types of contexts?

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National-building began in Europe as a result of war and the

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In which of the following environments would you expect lithogenous sediment to be the dominant sediment type?