so what do you try to said ?
read this:-
Nepal is mentioned in Hindu scriptures. In the Narayana Puja Nepal is mentioned.[6] The Atharva Siras (800-600 BC) also mention Nepal.Neolithic tools found in the Kathmandu Valley indicate that people have been living in the Himalayan region for at least 9,000 years. It appears that people who were probably of Tibeto-Burman ethnicity lived in Nepal 2,500 years ago.[8] Around 1000 BCE, small kingdoms and confederations of clans arose in the region. One of the princes of the Sakya confederation was Siddharta Gautama (563–483 BCE), who renounced his royalty to lead an ascetic life and came to be known as the Buddha ("the enlightened one"). By 250 BCE, the region came under the influence of the Mauryan empire of northern India, and later became a puppet state under the Gupta Dynasty in the fourth century CE. From the late fifth century CE, rulers called the Licchavis governed the area. The Licchavi dynasty went into decline in the late eighth century and was followed by a Newari era, from 879, although the extent of their control over the entire country is uncertain. By the late 11th century, southern Nepal came under the influence of the Chalukaya Empire of southern India. Under the Chalukayas,
Nepal's religious establishment changed as the kings patronised Hinduism instead of the prevailing Buddhism.
http://en.wikipedia.org/wiki/History_of_Nepal