Why might the government have denied recognition to some native american code talkers?

In the military and non-Indian world, recognition for the Code Talkers was slow to develop. They were not acknowledged for many years despite their sacrifices and important roles in winning the war.

Many Code Talkers earned medals, such as Purple Hearts, Silver Stars, Good Conduct Medals, and Combat Infantry Badges, during and after the war. But this was recognition that many servicemen and women received, depending on where they were and what they did in the war. Special recognition for Code Talking would not come for more than 40 years.

PLEASE MARK AS BRAINLIEST(: thanks me also(:

number 4. should be the correct answer