Answer: Colleges changed because slavery ended.
Explanation: Slavery ended on September 22, 1862. Because of this, African-Americans were allowed to start attending colleges.
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The most common method of communication in ancient Asia is sending a messenger on a horse. There are transfer stations for horses throughout the continent that allows the messenger to switch to a new horse after covering some distance. Water transportation is also used for communication. In China during an invasion from the North, soldiers on the towers of the Great Wall of China would light up a torch and all the other towers would do that as well until it reaches the capital.
The correct answer should be<span> b.
Migration was high from Europe, and many people were concerned that
those sympathetic to Germany or its cause could be spies.
That's why they used to act to make it illegal to not support your government when it came to war efforts and international relations. They believed and feared that those who liked Germany would spread their support to other people and criticize inappropriately. </span>