what climatic conditions were brought about by this period?
he Holocene climatic optimum (HCO) was a period of warming in which the global climate became warmer.
Holocene
The Holocene climatic optimum (HCO) was a period of warming in which the global climate became warmer. 
how can you tell if a great white shark is a male or female n great white sharks, sexual dimorphism is present, and females are generally larger than males. where are these sharks found? United States (Northeast and California), South Africa, Japan, Oceania, Chile, and the Mediterranean including Sea of Marmara and Bosphorus. what do they feed on? Fish (e.g. tuna, rays, other sharks), cetaceans (i.e., dolphins, porpoises, whales), pinnipeds (e.g. seals, fur seals, and sea lions), etc. how are these sharks used to attract tourists? Cage diving is most common at sites where great whites are frequent. where is this activity famous? The coast of South Africa, the Neptune Islands in South Australia, and Guadalupe Island in Baja California. how were the first island group formed? The sea levels rose at the start of the Holocene. how can this mentioned time period be defined? It began approximately 11,650 cal years before present, after the last glacial period, which concluded with the Holocene glacial retreat. what changes did it bring to the mankind? Its beginning corresponds with the beginning of the Mesolithic age in most of Europe, but in regions such as the Middle East and Anatolia with a very early neolithisation, Epipaleolithic is preferred in place of Mesolithic.
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Holocene [SEP] Climate
The Holocene climatic optimum (HCO) was a period of warming in which the global climate became warmer. However, the warming was probably not uniform across the world. This period of warmth ended about 5,500 years ago with the descent into the Neoglacial and concomitant Neopluvial. At that time, the climate was not unlike today's, but there was a slightly warmer period from the 10th–14th centuries known as the Medieval Warm Period. This was followed by the Little Ice Age, from the 13th or 14th century to the mid-19th century. Compared to glacial conditions, habitable zones have expanded northwards, reaching their northernmost point during the HCO.