Modern communications technology has changed trade a) speeding the movement of products to markets b) making it unnecessary to ship goods c) using satellites and computers to do business d) eliminating taxes on imports and exports

The model of human settlement suggests that uthe model of human settlement suggests that urban growth is patterned around transportation networks such as railroads and highways. a. burgess b. hoyt c. sauer d. von thunenrban growth is patterned around transportation networks

If a volcano’s magma is high in silica, the volcano will probably a. erupt quietly. b. remain dormant. c. erupt explosively. d. produce dark-colored lava.

In what three areas is the us leader?