Southern India in the context of "Vijayanagara empire"

The Chola Empire (Tamil: [t͡ʃoːɻɐɾ, soːɻɐɾ]), which is often referred to as the Imperial Cholas, was a medieval thalassocratic empire based in southern India that was ruled by the Chola dynasty, and comprised overseas dominions, protectorates and spheres of influence in southeast Asia.

The power and the prestige the Cholas had among political powers in South, Southeast, and East Asia at its peak is evident in their expeditions to the Ganges, naval raids on cities of the Srivijaya Empire on the island of Sumatra, and their repeated embassies to China. The Chola fleet represented the peak of ancient Indian maritime capacity. Around 1070, the Cholas began to lose almost all of their overseas territories but the later Cholas (1070–1279) continued to rule portions of southern India. The Chola empire went into decline at the beginning of the 13th century with the rise of the Pandyan dynasty, which ultimately caused the Chola's downfall.

The Vijayanagara Empire, also known as the Karnata Kingdom, was a late medieval Hindu empire that ruled much of southern India. It was established in 1336 by the brothers Harihara I and Bukka Raya I of the Sangama dynasty, belonging to the Yadava clan of Chandravamsa lineage.

The empire rose to prominence as a culmination of attempts by the southern powers to ward off Muslim invasions by the end of the 13th century. At its peak in the early 16th century under Krishnadevaraya, it subjugated almost all of Southern India's ruling dynasties and pushed the Deccan sultanates beyond the Tungabhadra-Krishna River doab region, in addition to annexing the Gajapati Empire (Odisha) up to the Krishna River, becoming one of the most prominent states in India. The empire's territory covered most of the lands of the modern-day Indian states of Karnataka, Andhra Pradesh, Tamil Nadu, Goa, and some parts of Telangana, Maharashtra and Kerala.

Ola leaf is a palm leaf used for writing in traditional palm-leaf manuscripts and in fortune telling (horoscopes) in Southern India and Sri Lanka.

Indo-Roman trade relations (see also the spice trade and incense road) was trade between the Indian subcontinent and the Roman Empire in Europe and the Mediterranean Sea. Trade through the overland caravan routes via Asia Minor and the Middle East, though at a relative trickle compared to later times, preceded the southern trade route via the Red Sea, which started around the beginning of the Common Era (CE), following the reign of Augustus and his conquest of Egypt in 30 BCE.

The southern route so helped enhance trade between the ancient Roman Empire and the Indian subcontinent, that Roman politicians and historians are on record decrying the loss of silver and gold to buy silk to pamper Roman wives, and the southern route grew to eclipse and then totally supplant the overland trade route. Roman and Greek traders frequented the ancient Tamil country, present day Southern India and Sri Lanka, securing trade with the seafaring Tamil states of the Pandyan, Chola and Chera dynasties and establishing trading settlements which secured trade with the Indian subcontinent by the Greco-Roman world since the time of the Ptolemaic dynasty a few decades before the start of the Common Era and remained long after the fall of the Western Roman Empire.

Kerala architecture is a style of architecture found in the Indian state of Kerala, and in parts of the Tulu Nadu region of Karnataka. Kerala's architectural style includes a unique religious sanctuary architecture that emerged in southwestern India, and varies slightly from the Dravidian architecture observed in other parts of southern India. The architecture of Kerala is derived from the Indian Vedic architectural tradition and forms a part of Dravidian architecture, one of the three styles of temple mentioned in the ancient books on Vastu shastra. The Tantrasamuchaya, Thachu Sastra, Manushyalaya Chandrika, and Silparatna are all architectural treatises that have had an impact on the architecture of Kerala. The Manushyalaya Chandrika, a work devoted to domestic architecture, has its roots in Kerala. In the Malabar Coast due to history of coastal trade, the Islamic architecture and Christian architecture harmoniously blends with indigenous Kerala architecture styles.

The Kaveri (also known as Cauvery, Tamil: [kɑːʋɪɾi]) is a major river flowing across Southern India. It is the third largest river in the region after Godavari and Krishna. The catchment area of the Kaveri basin is estimated to be 81,155 km (31,334 sq mi) and encompasses the states of Tamil Nadu, Karnataka, Kerala, and the union territory of Puducherry.

The river rises at Talakaveri in the Brahmagiri range in the Western Ghats. The source is located at an elevation of 1,341 m (4,400 ft) in the Kodagu district of Karnataka. The river flows for about 320 km (200 mi) through the Deccan Plateau in Karnataka before entering Tamil Nadu. It flows further eastward in Tamil Nadu for 416 km (258 mi) before flowing into the Bay of Bengal near Poompuhar in Mayiladuthurai district of Tamil Nadu. The river flows for a total length of about 800 km (500 mi). The major tributaries include Amaravati, Arkavati, Bhavani, Harangi, Hemavati, Kabini, Lakshmana Tirtha, Shimsha and Noyyal.

The Chola dynasty (Tamil: [t͡ʃoːɻɐr]) was a Tamil dynasty originating from Southern India. At its height, it ruled over the Chola Empire, an expansive maritime empire. The earliest datable references to the Chola are from inscriptions dated to the 3rd century BCE during the reign of Ashoka of the Maurya Empire. The Chola empire was at its peak and achieved imperialism under the Medieval Cholas in the mid-9th century CE. As one of the Three Crowned Kings of Tamilakam, along with the Chera and Pandya, the dynasty continued to govern over varying territories until the 13th century CE.

The heartland of the Cholas was the fertile valley of the Kaveri River. They ruled a significantly larger area at the height of their power from the latter half of the 9th century till the beginning of the 13th century. They unified peninsular India south of the Tungabhadra River and held the territory as one state for three centuries between 907 and 1215 CE. Under Rajaraja I and his successors Rajendra I, Rajadhiraja I, Rajendra II, Virarajendra, and Kulothunga Chola I, the empire became a military, economic and cultural powerhouse in South Asia and Southeast Asia.

Wootz steel is a crucible steel characterized by a pattern of bands and high carbon content. These bands are formed by sheets of microscopic carbides within a tempered martensite or pearlite matrix in higher-carbon steel, or by ferrite and pearlite banding in lower-carbon steels. It was a pioneering steel alloy developed in southern India in the mid-1st millennium BC and exported globally.