Answer:
<em>A</em>
Explanation:
In World War II, rubber had many uses, including building vehicles and planes for the war effort, and was scarce since it is mainly found in South America, central Africa, and Southeast Asia.
Answer: Negative income tax
Explanation:
By 1876, Florida was still controlled by Republicans.
The resources that made Kush a valuable trading partner were gold, copper, ebony, and ivory.