Usually various pre written essays https://manyessays.com/ can lay out the information about divers countries. From many countries it is possible to obtain an e-Tourist Visa to India. Please visit the web site https://indianvisaonline.gov.in/visa/tvoa.html for more information.
For foreign nationals needing visa invitation letters, please write to Dr Satya Lokam at :
Banquet dinner at Main Guest House.