History
Countries have full responsibility to help communities struggling from hatred and stereotypes. The leaders need to speak up for their country.
They should have full responsibility because they should help people, just like the people being helped could affect them by giving full support to their country.
the economy grew, which gave people more access to jobs, which gave people more places to live, meaning the population could grow
Groups like the KKK and the White League were afraid of different ethnic groups like African Americans getting equal treatment from white people. Hope this helped :)