A brief history of chili peppers, 500 years ago the spanish explorer Christopher Columbus encountered and called them "pepper" because of their similarity in taste with the spicy black peppers. There are significant evidences that peppers was domesticated in the south and central America for more than 6000 years ago. That is why some people call them chili, chilli or pepper.
From Mexico, at the time the Spanish colony that controlled commerce with Asia, it spread rapidly into the Philippines and then to India, China, Korea and Japan. Cultivation started along the trade trail across several continent.
It became a major ingredient the local cuisine everywhere.
Its also contributes in the medical world. Capsaicin is a safe and effective analgesic agent in the management of arthritis pain, herpes zoster-related pain, diabetic neuropathy, postmastectomy pain, and headaches. India now are known as the largest producer of chilli in the world.
Their product consist of dried red chili, fresh red chili, fresh green chili, chili padi, spiced chili and etc.
An alternate account for the spread is that the Portuguese got the chilli pepper from Spain, and cultivated it in India and finally it figures heavily in the cuisine of the Goan region of India, which was the site of a Portuguese colony.