Viking raids resulted from their population growth and quest for adventure.

Evidence

The causes which led to this racial ebullition were the spontaneous growth of their strength and population, the thirst for adventure, and the complications of dynastic quarrels. — Winston Churchill, A History of the English-Speaking…, 162

Categorization

• corroborated: 2 independent passages support this claim — Winston Churchill, A History of the English-Speaking…, 162
• XREF: connects to: Vikings captured people to sell as slaves in trade markets. — Neil MacGregor, A History of the World in 100 Objects, 897; Viking trade routes connected England to the Middle East and Asia. — Neil MacGregor, A History of the World in 100 Objects, 895

Broader Connections

• Vikings captured people to sell as slaves in trade markets. #expands (0.70) — Neil MacGregor, A History of the World in 100 Objects, 897
• Viking trade routes connected England to the Middle East and Asia. #expands (0.60) — Neil MacGregor, A History of the World in 100 Objects, 895