Short answers, pulled from the story.
The Viking Age in Estonia lasted from around 800 to 1050 AD, situated within the broader Viking Age that historians date to 793-1066 AD. It was preceded by a Pre-Viking Age running from roughly 550 to 800 AD.
The Salme ships are two clinker-built vessels of Scandinavian origin discovered in 2008 and 2010 near the village of Salme on Saaremaa. Excavated in 2011 and 2013 and dated to around 700-750 AD, they contained the remains of more than 40 warriors killed in battle, along with weapons and artifacts that reshaped scholarly understanding of early Scandinavian influence in the region.
Iron was the most definitive export from Viking Age Estonia, sourced from bog iron deposits found across the territory. Swords and spears were also manufactured locally, including Petersen's K type blades, which were the most numerous weapon type found in 10th-century Estonian sites.
The population of Ancient Estonia around 1100 AD is estimated at 150,000, with upper estimates reaching 180,000. This represents roughly a five-fold increase from the approximately 30,000 people estimated for the same territory around 400 AD during the Roman Iron Age.
Several Norse and medieval sources document the inhabitants of Viking Age Estonia. Saxo Grammaticus placed them at the Battle of Bråvalla. The Ynglinga saga describes a 7th-century Swedish king killed in Estonia. Njál's saga, the Heimskringla sagas, and the Livonian Chronicle all contain accounts of Estonian seafarers, warriors, and their warships.
The Viking Age in Estonia ended through a combination of internal cultural shifts and external conquest. The spread of Christianity and the rise of quasi-feudal kingdoms in Scandinavia made raiding economies unsustainable, while German, Danish, and Swedish forces arrived under the Northern Crusades and overwhelmed the local tribes through baptism, military occupation, and in some cases extermination.