D. The Kansas-Nebraska Act states that slaves were only allowed in the states below a certain point. And that the number of slave states and free states must remain equal.
The southern states reacted negatively to the election of Abraham Lincoln in 1860. They were shocked and protested against Abraham Lincoln's election because they were not in favor of his propaganda to free the slave states (which mostly were in the Southern parts).
There are many important reasons why populations of highly developed countries decline. To number some, easy access to contraceptive method together with the a high level of female education makes birth control one important factor on population downward. Moreover, a stable economy improves lifestyle helping the population to choose professional careers thus focusing on different aspects but not making children.
On the other hand, it is important to mention that although the population in developed countries might be declining, the death rate is declining as well. As above mentioned, the lifestyle can be high and the aspects as shelter and a living space makes people healthier. Along with the economical growth comes the technological and health care advancement which greatly help the population of the developed countries to have easier and more affordable access to medical treatment making date rates lower.
I go this online so read it and get your answer. Hundred Years’ War, intermittent struggle between England and France in the 14th–15th century over a series of disputes, including the question of the legitimate succession to the French crown. The struggle involved several generations of English and French claimants to the crown and actually occupied a period of more than 100 years. By convention the war is said to have started on May 24, 1337, with the confiscation of the English-held duchy of Guyenne by French King Philip VI. This confiscation, however, had been preceded by periodic fighting over the question of English fiefs in France going back to the 12th century.
Weakened by subsequent and frequent attacks, and cut-off from international trade of salt, gold, and other important things, the kingdom was vulnerable and unable to prevent defeat. In 1240 C.E., Ghana was conquered and absorbed/added into the growing nation of Mali, which would soon become the next great empire.
After Mansa Musa died, his son Maghan took the throne. Maghan was a weak ruler. Raiders from the southeast poured into Mali. Mali neverfully recovered from the attack. The Malian Empire continued to weaken and decline after.This soon lead to the uprise of the new empire Songhai,which would be the new and powerful empire after Mali had fallen.