It is impossible to generalize about the weather, the landscape or even the way of life, because the nation occupies a) a rather limited area; b) a greater part of Central America; c) half of a continent 2. Each person who came to America had left his homeland because he wanted a) to solve his family problems ; b) to have religious freedom. 3. The sea route through the Panama Canal , which connects the two oceans, runs over a) the Gulf of Mexico and the Caribbean Sea; b)the Mississippi and the Red Sea; c) the Rio Grande and the Great Lakes. 4. The greatest width of the Appalachians belt in the south is kilometers a) 250; b) 320; c) 410. 5. The Colorado and Columbia rivers are navigable only a) throughout their length; b) in their lower reaches; c) in their upper reaches. 6. The Rio Grade about 3,200 kilometers long, is the most important river of a) the Southeast; b) the Southwest; c) the central part of the country