Across

3French and Spanish explorers crossed the ___ __ ___ en route to Mexico and Central America (4,2,6)
6The Mississippi and Missouri Rivers flow from north to ___ and empty into the Gulf of Mexico. (5)
8Many pioneers began their journey west on the ____ River, the "gateway to the West" (4)
9The Ohio River was considered the "_____ to the west" because it is one of the few rivers that flow east to west (7)
11The ____ River was explored by Lewis and Clark after he crossed the Louisiana Territory. (8)
12Lewis and Clark reached the _____ Ocean (7)

Down

1The ___ ____ River forms the border between the U.S. and Mexico (3,6)
2The Spanish explored the ____ River, and claimed the land in the southwest for Spain. (8)
4The _______ and Missouri Rivers

were the transportation arteries for farm and industrial goods, and they were also links to other parts of the world. (11)
5Inland port cities grew in the midwest along the ____ ____. (5,5)
7Early settlers, immigrants and
explorers crossed the ___ ocean to reach North America (8)
10In the 1800s, inland port ____ began to grow around the Great Lakes (6)

Solution

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