Cumin is related to the Parsley Family (surprise!) and is grown in many parts of the world. Therefore, depending on soil, rainfall, climate, fertilizers and other factors are likely to create subtle differences in the final seed flavors based upon where and how it is grown. That all being said, it's the same plant wherever it is grown.
India has traditionally been the world’s leading commercial producer of cumin with 70% of the market, followed by Syria with 15% and Turkey with 5%. With the ongoing conflicts in the Middle East Syria and Turkey combined are now only producing about 10% of the world's total. India is now producing close to 80% of the cumin output.