STORY OF East Java

East Java (Javanese: Java Wetan) is a province in the eastern part of Java, Indonesia. Its capital is located in Surabaya. Its area is 47 922 km² and a population of 37,476,757 inhabitants (2010). East Java has the largest area among 6 provinces in Java, and has the largest population in Indonesia after West Java. East Java Java Sea in the north, the Strait of Bali in the east, the southern Indian Ocean, as well as the Central Java province in the west. East Java region also includes the island of Madura, Bawean, Kangean island as well as a number of small islands in the Java Sea (Masalembu Islands), and the Indian Ocean (Sempu Island and Nusa Barong), East Java is known as the center of eastern Indonesia, and has a fairly high economic significance, which contributed 14.85% to the national Gross Domestic Product.

Prehistoric
East Java has been inhabited since prehistoric times. This can be evidenced by the discovery of the remains of the fossil Pithecanthropus mojokertensis in Kepuhlagen, Mojokerto; Pithecanthropus erectus at Trinil, Ngawi; and Homo Wajakensis in Wajak, Tulungagung.

Dinoyo inscriptions found near the city of Malang is the oldest written sources in East Java, namely 760. In 929 years, MPU SINDOK move the center of Mataram kingdom in Central Java to East Java, as well as establishing isyana dynasty which later evolved into the Kingdom Medang, and as successor is Kahuripan, Janggala, and the Kingdom of Kediri. In the kingdom of Singhasari, King Kertanagara expansion to the Malays. In the era of the Majapahit kingdom under King Hayam Wuruk, the region up to Malacca, and the Philippine Islands.
The earliest evidence of Islam into East Java is the tomb of Gresik many tombstones in 1102, as well as a number of Islamic cemetery in the tomb complex of Majapahit. In addition, the emergence of the temple were also found in the Regional Jedong Wagir, Malang, East Java, which is believed to be older than Dinoyo inscription, which is about the 6th century AD. 

Relief:In physiographic, East Java Province can be grouped into three zones: the southern zone (plato), the middle zone (volcanic), and the northern zone (folds). Lowlands and highlands in the middle (of Ngawi, Blitar, Malang, to Bondowoso) has a fairly fertile soil. In the northern part (of Bojonegoro, Tuban, Gresik, to Madura Island) are Northern Limestone Alps, and Kendeng relatively barren mountains. In the middle of a stretch of mountain ranges and volcanoes: On the border with Central Java are Lawu (3,265 meters). In the southeast Madiun artifacts Mount Wilis (2,169 meters), and Mount Liman (2,563 meters). In the middle of the corridor there is a group Anjasmoro with peaks Mt.Arjuno (3,339 meters), Mount Welirang (3,156 meters), Mount Anjasmoro (2,277 meters), Mount Kawi (2,551 meters), and Mount Kelud (1,731 meters); The mountains are located in most Kediri, Blitar, Malang, Pasuruan, Mojokerto and Jombang. The group has the peak of Mount Bromo Tengger (2,329 meters), and Mount Semeru (3,676 meters). Semeru, with a peak called Mahameru is the highest mountain in the island of Java. In the area of ​​horse hooves, there are two groups of mountains: Mountains Iyang with the peak of Mount Argopuro (3,088 meters), and with a peak Mount Ijen Mountains Roared (3344 meters). In the south there is a series of hills, that of the south coast of Pacitan, Trenggalek, Tulungagung, Blitar, Malang up. Southern Limestone Alps is a continuation of a series of mountains Sewu in Yogyakarta. 

Sumber :https://id.wikipedia.org/wiki/Jawa_Timur