Neolithic Era in the context of Domestication of animals

The genetic history of North Africa encompasses the genetic history of the people of North Africa. The most important source of gene flow to North Africa from the Neolithic Era onwards was from Western Asia, while the Sahara desert to the south and the Mediterranean Sea to the north were also important barriers to gene flow from sub-Saharan Africa and parts of Europe in prehistory. However, North Africa is connected to Western Asia via the Isthmus of Suez and the Sinai peninsula, while at the Straits of Gibraltar, North Africa and Europe are separated by only 15 km (9 mi), similarly Malta, Sicily, Canary Islands, Lampedusa and Crete are close to the coasts of North Africa, with the indigenous Guanche people of the Canary Islands being Berber.

North Africa is a genetically heterogenous and diverse region, and is characterized by its diverse ethnic groups, the main ones being Arabs, Berbers and Copts (in Egypt). North African populations show a complex and heterogeneous genetic structure that has been described as an amalgam of at least four different ancestral components from the Middle East, sub-Saharan Africa, Europe and also indigenous North Africans who are genetically distinct from these three. Although North Africa has experienced gene flows from the surrounding regions, it has also experienced long periods of genetic isolation. Some genetic studies have been criticised for their interpretation and categorisation of African genetic data.

The recorded history of Scotland begins with the arrival of the Roman Empire in the 1st century, when the province of Britannia reached as far north as the Antonine Wall. North of this was Caledonia, inhabited by the Picti, whose uprisings forced Rome's legions back to Hadrian's Wall. As Rome finally withdrew from Britain, a Gaelic tribe from Ireland called the Scoti began colonising Western Scotland and Wales. Before Roman times, prehistoric Scotland entered the Neolithic Era about 4000 BC, the Bronze Age about 2000 BC, and the Iron Age around 700 BC.

The Gaelic kingdom of Dál Riata was founded on the west coast of Scotland in the 6th century. In the following century, Irish missionaries introduced the previously pagan Picts to Celtic Christianity. Following England's Gregorian mission, the Pictish king Nechtan chose to abolish most Celtic practices in favour of the Roman rite, restricting Gaelic influence on his kingdom and avoiding war with Anglian Northumbria. Towards the end of the 8th century, the Viking invasions began, forcing the Picts and Gaels to cease their historic hostility to each other and to unite in the 9th century, forming the Kingdom of Scotland.