A leader doesn't have to be an elected or appointed official that is in charge of a country. Anyone who garners influence and gains a following can be considered a leader. Gandhi works.
Because the H doesn't serve any phonetic purpose (at least with how it's pronounced in English) but people know it has an H, so they associate it with words like "ghost" and put the H after the G. There are no words (that I can think of) with the H after a D, except for Indian words like "dhoti" which are not that well known.
Is it accurate to call Gandhi a "future" world leader? The peak of his influence chronologically coincides with much of Mussolini's regime... and he only survived a few years longer than Mussolini. Wouldn't "contemporary" be more accurate?
good quiz, btw!
https://www.jetpunk.com/user-quizzes/1277141/the-dictator-files-vladimir-lenin