Precambrian time, period of time extending from about 4.6 billion years ago (the point at which Earth began to form) to the beginning of the Cambrian Period, 541 million years ago. Precambrian time encompasses the Archean and Proterozoic eons, which are formal geologic intervals that lasted from 4 billion to about 541 million years ago, and the Hadean Eon, which is an informal interval spanning from 4.6 billion to 4 billion years ago. The Precambrian represents more than 80 percent of the total geologic record.
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The Napoleonic Code gave husbands greater freedom than wives
The the middle east. i believe
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In major urban centers, (1)WOMEN and their children made up 80% or more of the population in 1890.
Native-born Americans moved from rural area to cities when (2)TECHNOLOGY changed work on farms.
African Americans who moved to Northern cities after 1914 hoped to find jobs as well as less (3)RACISM and violence.
In large, crowded cities, the poorest residents lived in (4)SLUMS/ GHETTOES/PUBLIC HOUSING.
The (5)MIDDLE CLASS included the families of professional people.
The name (6)WEALTH GAP suggested both the extravagant wealth of the time and the poverty that lay underneath.
