Which of the following describes valleys? 1. stretches of mostly flat land

2. land surrounded by water on three sides

3. areas of low land located between mountains or hills

Why are the majority of the world's economies mixed? what may happen to the "pure" types of economies (traditional, socialist/command, market capitalist) when they incorporate elements from other economic models?

Of the 8 territories that were brought under the flag of the united states by 1853, which one do you think was the most important addition to the growth of the united states?

Which of the following is a result of the low of food production