"Expunged" only applies to court and government maintained records. It does not apply to any records kept or maintained by private organizations or companies.
NAACP
A corporate culture is formed in a company with group of people with different values, traditions and beliefs.
It didn't. The Macedonian/Greek upper class maintained Hellenic culture, and the ruled mostly continued their own culture.
Organizations.
John L. Lewis
The National Labor Union formed a political party in the 1870s.
John L. Lewis
It is not a government's function to preserve culture. Civic organizations run by people of the community are usually the keepers of culture.
Swahili culture.
The keyword is "cultural." It is formed from combining the words "culture" and "al," indicating that something has the character or likeness of a particular culture.
Nation is the term that best describes a country formed on a shared culture, history, and language.