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 lasting effect of religious missionaries in Africa is that they spread Christianity. They established hospitals, clinics and offered modern medicine. They introduced European system of management and styles of dress. The Missionaries opened schools. Also training colleges too. They paved the way for the improvement of agriculture through establishing farms where new crops and better methods of farming and equipment were introduced. Furthermore, the missionaries fought slave trade. They also destroyed local industries like craft industries which were replaced with European products. Moreover, some African religions were lost to Christianity.
D. 1800s because that's when Cuba, Puerto Rico and Mexico gained independence
One of the first known practitioners of the filibuster was the Roman senator Cato the Younger.
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There are a lot of difficulties that the American and Australian soldiers had to face in the Vietnam War: the weather, the bug, the people, ect. The weather and bugs made the soldiers suffered from dehydration and diseases as they did in any other war.
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