Final answer:
The modern era exhibits unique characteristics like climate change and global pandemics that differentiate it from earlier historical epochs.
Explanation:
Climate change, global pandemics, and political upheaval are more characteristic of the modern era than earlier periods in history. The complexities of governance, technological advancements, and societal structures in the modern era have created a different landscape compared to earlier epochs. For example, the 1300s are known as a 'calamitous fourteenth century,' highlighting the unique challenges faced during that time period.
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