Why did Amelia Earheart crash?

NO one knows what happened to her. Some theories suggests that she was a spy for the US government. I think that she was eaten by cows (the most reasonable guess). You should watch the movie its good.Here are some more theories;

• She and Fred Noonan Crashed on an island and starved
• She was brainwashed by the Japanese government and was Tokyo Rose
• She returned to America Under a different Name