Answer:
Correct answer is C. oil
.
Explanation:
Option C is the only correct option as reasons for this drastic drop were pretty simple. During the 1980s the need for oil has been reduced, while on the other side the production has increased. Because of that the prices went down as it was impossible to sell all the oil that we had on the market.
All other options are false as the prices of this products didn't change drastically in that period,
Option D. It banned slavery in the Indian Territory was not the feature of Chickasaw's constitution.
The Constitution clearly says " The legislature has no power to pass laws for the emancipation of slaves without the consent of their owners, nor without paying their owners previous to such emancipation a full equivalent in money for the slave so emancipated".
Generalists - Species with a broad ecological niche. They can live in many different places, eat a variety of foods, and tolerate a wide range of environmental conditions.
Hope this helps :)
Blitzkrieg tactics were very successful, because they were surprise attacks, so the country being attacked usually didn't have time to prepare for the attack. They were also very quick, so Germany could blitzkrieg attack another country, and then leave before the country attacked could gather its military to defend themselves.