The 4th millennium BC saw major changes in human culture. It marked the beginning of the Bronze Age and of writing.
The city states of Sumer and the kingdom of Egypt were established and grew to prominence. Agriculture spread widely across Eurasia. World population in the course of the millennium doubled, approximately from 7 to 14 million people in the area surrounding them.
Read more about 4th Millennium BC: Events, Cultures, Environmental Changes, Significant Persons, Inventions, Discoveries, Introductions, Religion, Calendars and Chronology, Centuries
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“The millennium will not come as soon as women vote, but it will not come until they do vote.”
—Anna Howard Shaw (1847–1919)
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