Motte and bailey castles were important defensive structures built by the Normans after their conquest of England in 1066. They consisted of a raised motte with a wooden fort and a larger bailey area below where soldiers and their families would live. Motte and bailey castles provided strong defensive positions that could be built quickly, allowing the Normans to establish control over the English countryside. Though made of wood so they were temporary, their speed of construction let the Normans assert dominance despite being outnumbered by the English inhabitants.