Neolithic Age
The history of Sweden between 4000 BC and 1701 BC
Farming and animal husbandry, along with monumental burial, polished flint axes and decorated pottery, arrived from the Continent with the Funnel-beaker Culture in c. 4000 BC. Whether this happened by diffusion of knowledge or by mass migration or both is controversial. In a century or two, all of Denmark and the southern third of Sweden became neolithised and much of the area became dotted with megalithic tombs. The people of the country's northern two thirds retained an essentially Mesolithic lifestyle into the 1st Millennium BC. Coastal south-eastern Sweden, likewise, reverted from neolithisation to a hunting and fishing economy after only a few centuries, with the Pitted Ware Culture.
In c. 2800 BC the Funnel Beaker Culture gave way to the Battle Axe Culture, a regional version of the middle-European Corded Ware phenomenon. Again, diffusion of knowledge or mass migration is disputed. The Battle Axe and Pitted Ware people then coexisted as distinct archaeological entities until c. 2400 BC, when they merged into a fairly homogeneous Late Neolithic culture. This culture produced the finest flintwork in Scandinavian Prehistory and the last megalithic tombs.
References: Wikipedia