Valmiki Ramayan mentions the kingdoms of Pahlavas/ Pallava ( located in Uttarapath/ north-eastern Iran - Northern part of Jambudvip)
Bahliks (people of Balkan region, north west Iran).
Kambhoj ( of western Iran).
*Kuru, Anga, Gandhar, Kamboj were amongst the 16 Mahajanpads of those times.
Kurus were one of the Panchnand/ five kuls.
The decendents of Druhu & Anu Kuls were called Malecch & Yavans
Cyrus’s father in old Persian was called ‘Kamboj’ and Cyrus was called 'Kurus'.
Hinduism influenced pre Greek and pre Roman Etruscan civilizations is proved by wall frescoes and terracotta portraits with scenes from Ramayan found in 700 BC.
Greek, Roman, German, French, Scandinavian, Slavic etc languages have rich Sanskrit content.
Even if we were look at it from the point of ancient history,
Southeast Asia was frequented by traders from Kalinga & South India.
Well aware of the monsoon winds & ocean currents, the developed Hindu societ, using north-eastern monsoon winds that blow from mid-November, sailed down the coast to Sri Lanka & taking fresh supplies, crossed the Indian Ocean to the northern tip of Sumatra/ Swarnadwipa & sailed further down the Straits of Malacca towards Palembang and take the sea route to Borneo & Vietnam, alternatively head south touching the western coast of Sumatra to Bali and Java/ Yavadwipa, between 1st & 8th century.
Many parts of southeast Asia, including the southern Philippines, Malaysia, Singapore, Indonesia, Thailand, Laos, Cambodia and Vietnam were dominated by the Hindu culture during the reigns of Sri Vijaya Empire, Sailendra, Majapahit Empire, Khmer kingdom of Cambodia, Sukothai and Champa Empires.
Hence the languages, scripts, literatures, calendars, beliefs system and artistic aspects of these nations have much in common with India.
Source/Credits: Meenakshi Sharan, Ayodhya Foundation, Global Ramayana Connect on Facebook