The last reconstruction 16 months did for the us
Five years.
1865-1877
As long as it takes.
as long as it takes you to eat it!
ratification of the 13th, 14th, and 15th amendments
as long as it takes me to vomit
The US Civil War lasted a tad over 4 years. That is not long, at all. Many Civil Wars last decades.
The Civil Rights Act of 1964 is still in effect.
it lasted 14 years
However long it takes for something to go wrong in the relationship?
It did not lead to long-term civil rights for African Americans. Many of its reforms were overturned when Reconstruction ended.