ऐन्दव आख्यानम् । aindava ākhyānam ।

स्वस्ति नः तार्क्ष्योऽरिष्टनेमि ...॥
svasti naḥ tārkṣyo:'riṣṭanemi
...॥
ऐन्दव आख्यानम् ।
aindava ākhyānam ।
--
इन्दु / चन्द्र
indu / candra
--
संस्कृत / saṃskṛta > सनातन-धर्म / sanātana dharma
/
स्वस्ति नः तार्क्ष्योऽरिष्टनेमि ...॥
svasti naḥ tārkṣyo:'riṣṭanemi ...॥
त्रिपुरा-रहस्ये ज्ञान-खण्डे ऐन्दव-आख्यानम्
इन्दु > ऐन्दव > इन्द्वीय > इन्दवी > इन्दसः > हिन्दसा (उर्दू अरेबिक / पर्शियन्), हिन्दी, इन्दोनेशिया
अमेरिकन-इंडियन्, इन् > चन्द्र > सिन ( Sin- Goddess) > चन्द्रमा देवता (स्त्रीलिङ्ग) सिनीवाली अमावास्या ...
all point-out The presence and prevalence of 'Indu' (not Hindu) -culture all over the Globe.
--
In Tamizh, They write 'हिंदी' as  'इंदी', the word that begins with 'इ'.
This is the root of 'Hindu' while we have been mislead in the concept that 'Hindu' came from The River Sindhu.
वाल्मीकि रामायण / उत्तरकाण्ड सर्ग 101 Valmiki Ramayana uttarakāṇḍa sarga 101 describes how the 2 princes लव-कुश lava-kuśa of The King श्रीराम śrīrāma were given the Kingdom of गन्धर्व / गान्धार / कन्धार gandharva / gāndhāra / kandhāra (Present-day Afghanistan) and the River  सिन्धु Sindhu demarcated the border of the 2 Kingdoms.
Thus the Hills of Sindhu-kusha were named.
The part south of Sindhu (Present-day Lahore) was the citadel of Lava, while the part north of The River was of Kusha.
--
Summarily 'Hindutva' / 'Hindu' is but distortion of 'indu' and may be a culture and tradition but NOT A RELIGION.
'India' is quite appropriate the name of this country which reflects the ethnicity of all Indians and all those all over the globe who follow सनातन-धर्म / sanātana dharma, whatever be their cultural preferences.
--