Because people had alot oof time on there hands
stone
To make them stronger and stone is a very strong material
because motte and bailey castles were too weak. motte and bailey: .Made out of wood .small Square Keep: .made out of stone .very high
they built keeps so that they could see there enemies and attack them
they are part of a castle and they are tall.....and square
The Times Square was built at the year of, 1904
Stone keeps are built on top of a hill to get the vantage point.
Normans
Concrete.
Square keep castles were mainly built far from villages
all over England on hills
1. It had four sides that needed to be manned. 2. They tended to be less than 20m by 20m compressing defending space on the battlements 3. They could be laid siege to. 4. They could be undermined to collapse the walls. 5. Early keeps were square and were considered to be weak but by the time round cornered keeps were built the cannon had become the preferred means of assault.