The Hyksos made their first appearance during the reign of Sobekhotep IV , and around 1720 BC took control of the town of Avaris ( the modern Tell el-Dab ` a/Khata ` na ) , conquering the kingdom of the 14th dynasty .
The Hyksos made their first appearance during the reign of Sobekhotep IV . About 1720 BC they took control of the town of Avaris ( the modern Tell el-Dab ` a/Khata ` na ) , conquering the kingdom of the 14th dynasty .