The Reconstruction era began in 1865 and ended in 1877.
Racism continued and blacks still werent treated as equalls, but later on came Martin Luther and that era ended it all.
Slavery ended in the Reconstruction Era, thanks to the 13th Amendment.
Baby Boomers were born after WWII ended. That would be 1947 and after..
the invention of cotton gin by Eil Whitney in 1793
patents and copyrights
World War II.
The railroad system
No... The Holocaust ended before the era called the Cold War began.
The era that ended with Earth covered in massive deserts was the Permian period, specifically during the Permian-Triassic extinction event around 252 million years ago. This mass extinction event wiped out nearly 96% of marine species and 70% of terrestrial vertebrate species, leading to widespread desertification of the planet.
The Battle of Waterloo ended the Napoleonic era.
Extinction did.
An asteroid impact
Improvement Era ended in 1970.
1930's era.
It ended about 65 million years ago
The Cenozoic era started 65 million years ago.