What effect did Ngugui wa thiong'o's imprisonment have on him artistically?

Ngugi wa Thiong'o's imprisonment had a significant impact on him artistically by influencing him to write in his native language, Gikuyu, to resist cultural Imperialism and promote African languages. This experience also strengthened his commitment to addressing social and political issues in his work, leading to a more overtly political and activist approach in his writing.