Unit 8: Cold War and Decolonization
Unit 9: Globalization
AP Theme
Advances in technology and economic exchange in the 20th century continued the rapid pace of global change that had begun during the early industrial revolution.
Significant areas of advancement included:
Steamships, railroads, and telegraphs revolutionized communication and transportation in the 19th century. However, those technologies did not impact the daily lives of most people. In contrast, the 20th century saw several new waves of communication and transportation technologies that slowly became accessible to increasing numbers of people. These technologies first spread through the most developed nations before spreading to less developed countries. These technologies included:
Positive impacts of new communication and transportation technologies
Negative impacts of new communication and transportation technologies
Coal powered the early industrial revolution. However, coal had its limitations. New energy sources and technologies powered the explosive economic growth of the 20th and early 21st centuries. A few of those technologies include:
Positive impacts of new communication and transportation technologies
Negative impacts of new communication and transportation technologies
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The Green Revolution was a series of innovations that increased agricultural production globally, starting in the 1950s and 1960s. The Green Revolution resulted in the following:
Major Green Revolution innovations included:
Connection across time: Innovations in agriculture reshape the world. When drought-resistant and fast-growing Champa rice arrived in Song China in the 11th century, it fed a rapidly expanding Chinese population, which resulted in the commercialization of China. During the mid-17th century, new agricultural practices in England increased crop yields and provided cheap food for growing urban populations. Increased food supply was a crucial ingredient in the start of the English Industrial Revolution.
Positive impacts of new communication and transportation technologies
Negative impacts of new communication and transportation technologies