which level of economic development is typical of nations with high infant mortality rates, low literacy rates, and low life expectancy rates?

What is drought? what problem can cause?

The covers all of earth like a thin shell,but it is not a solid sheet of material.it is broken up into several large sections and many smaller ones. fill in the blank.

Read the article titled "castro resigns." why did the us impose trade sanctions against cuba in 1962?