Which accurately describes the origins of Buddhism?

1) Southern India is the birthplace of Buddhism, started by a man named Mahatma Gandhi.

2) Northern Korea is the birthplace of Buddhism, started by a man named Sri Krishna.

3) Northern India is the birthplace of Buddhism, started by a man named Siddhartha Gautama.

4) Southern China is the birthplace of Buddhism, started by a man named Confucius.