From the Meiji Restoration until the end of World War II, the full title of Japan was Dai Nippon Teikoku (大日本帝國?), meaning "the Empire of Great Japan". Today the name Nippon-koku or Nihon-koku (日本国?) is used as a formal modern-day equivalent simply meaning "the State of Japan"; countries like Japan whose long form does not contain a descriptive designation are generally given a name appended by the character koku (国?), meaning "country", "nation" or "state".
The character nichi (日?) means "sun" or "day"; hon (本?) means "base" or "origin". The compound means "origin of the sun" or "sunrise" (from a Chinese point of view, the sun rises from Japan); it is a source for the popular Western description of Japan as the "Land of the Rising Sun". Before Nihon came into official use, Japan was known as Wa (倭?) or Wakoku (倭国?).
The English word for Japan came to the West via early trade routes. The Old Mandarin or possibly early Wu Chinese (吳語) pronunciation of Japan was recorded by Marco Polo as Cipangu. In modern Shanghainese, a Wu dialect, the pronunciation of characters 日本 'Japan' is Zeppen [zəʔpən]. The old Malay word for Japan, Jepang, was borrowed from a southern coastal Chinese dialect, probably Fukienese or Ningpo, and this Malay word was encountered by Portuguese traders in Malacca in the 16th century. Portuguese traders were the first to bring the word to Europe. An early record of the word in English is in a 1565 letter, spelled Giapan.
A Paleolithic culture around 30,000 BC constitutes the first known habitation of the Japanese archipelago. This was followed from around 14,000 BC (the start of the Jōmon period) by a Mesolithic to Neolithic semi-sedentary hunter-gatherer culture, who include ancestors of both the contemporary Ainu people and Yamato people, characterized by pit dwelling and rudimentary agriculture. Decorated clay vessels from this period are some of the oldest surviving examples of pottery in the world. Around 300 BC, the Yayoi people began to enter the Japanese islands, intermingling with the Jōmon. The Yayoi period, starting around 500 BC, saw the introduction of practices like wet-rice farming, a new style of pottery, and metallurgy, introduced from China and Korea.
Japan first appears in written history in the Chinese Book of Han. According to the Records of the Three Kingdoms, the most powerful kingdom on the archipelago during the 3rd century was called Yamataikoku. Buddhism was first introduced to Japan from Baekje of Korea, but the subsequent development of Japanese Buddhism was primarily influenced by China. Despite early resistance, Buddhism was promoted by the ruling class and gained widespread acceptance beginning in the Asuka period (592–710).
The Nara period (710–784) of the 8th century marked the emergence of a strong Japanese state, centered on an imperial court in Heijō-kyō (modern Nara). The Nara period is characterized by the appearance of a nascent literature as well as the development of Buddhist-inspired art and architecture. The smallpox epidemic of 735–737 is believed to have killed as much as one-third of Japan's population. In 784, Emperor Kanmu moved the capital from Nara to Nagaoka-kyō before relocating it to Heian-kyō (modern Kyoto) in 794.
This marked the beginning of the Heian period (794–1185), during which a distinctly indigenous Japanese culture emerged, noted for its art, poetry and prose. Murasaki Shikibu's The Tale of Genji and the lyrics of Japan's national anthem Kimigayo were written during this time.
Buddhism began to spread during the Heian era chiefly through two major sects, Tendai by Saichō, and Shingon by Kūkai. Pure Land Buddhism (Jōdo-shū, Jōdo Shinshū) greatly becomes popular in the latter half of the 11th century.
(source)