19th century BC
The 19th century BC was the century that lasted from 1900 BC to 1801 BC. Events

 1900 BC: Transition from Early Helladic III to Middle Helladic culture in Greece. c. 1900 BC: Minoan Old Palace (Protopalatial) period starts in Crete. c. 1900 BC: Fall of last Sumerian dynasty. c. 1900 BC: Late Harappan phase of the Indus Valley civilization begins
 c. 1900 BC: The Mokaya along the Pacific coast of present-day Chiapas, Mexico were preparing cacao beverages. c. 1900 BC: Port of Lothal is abandoned. Hittite empire in Hattusa, Anatolia. c. 1897 BC: Senwosret II (Twelfth Dynasty) started to rule. He built Kahun near his pyramide tomb complex at el-Lahun. c. 1895 BC–1878 BC: "Pectoral of Senwosret II", from the tomb of princess Sithathoryunet at el-Lahun was made. Twelfth Dynasty. It is now in the Metropolitan Museum of Art, New York. c. 1880 BC: Pharaoh Senwosret II starts to rule (other date is 1897 BC). 1878 BC: Senwosret II (Twelfth Dynasty) died. c. 1878 BC: Senwosret III (Twelfth Dynasty) started to rule. c. 1874 BC: Pharaoh Senwosret II dies (other date is 1878 BC). c. 1874 BC: Pharaoh Senwosret III starts to rule (other date is 1878 BC). c. 1860 BC: Senusret III inspects the Nubian frontier, he leads four punitive campaigns against the Nubians. c. 1860 BC: Amenemhat III starts to rule
 c. 1855 BC: Pharaoh Senwosret III dies (other date is 1839 BC). c. 1839 BC: Senwosret III (Twelfth Dynasty) died. 1836 BC-1818 BC: Head of Senusret III is made. Twelfth dynasty of Egypt. It is now kept at The Nelson-Atkins Museum of Art, Kansas City, Missouri. Sovereign states

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