Answer:
The first presidential candidate to use social media to reach voters was Barack Obama
Explanation:
many died due to widespread smallpox epidemics. no substantial improvement in roads and postal services. many farmers became industrial workers. people moved from urban areas to rulal land.
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The reason why the spread of the potato is so important to us is that it revolutionised the world's food supply. There was suddenly enough food to feed everyone on our planet. It took one year for the potato to get from London to the south of France. The potato left London in 1599 and arrived in the south of France in 1600. The potato also took one year to get from Madrid to Rome. The potato left Madrid in 1565 and arrived in Rome in 1566.
