Why did It take forty years for the government to officially admit its wrongdoing for keeping Japanese Americans in internment camps. In your opinion, why did it take so long?

It took so long because they were so boastful and had so much pride in their selves they did not want to admit their wrongdoing but wanted people to think that they were right.

Not sure how long you want this to be, but here's my opinion:

America has a lot of pride. Which it should, considering it built itself up from being at the bottom. America's pride usually benefits it, letting us make smart decisions. However, sometimes our pride stops us from doing what is right. For example, we collected Japanese Americans and put them into internment camps. At the same time, Hitler was collecting Jewish people to put them into internment camps. Why did it take us forty years to apologize for doing what was wrong? It was our pride. We hate admitting that we messed up - majorly. We collected people, took them away from their lives, and locked them up for doing nothing wrong but looking like the enemy. How do you apologize to thousands of people for an entire being racist? I believe that America took years to apologize because of our pride in not wanting to admit we could ever do wrong. Admitting the "Land of the Free" was only free to some people. It wasn't because we didn't realize we were wrong - we most definitely knew. We just couldn't admit it.

I hope this sounds okay and meets your requirements! Feel free to personalize it however you want.