3. what were the crusades, and how did they serve to weaken the byzantine empire?

How did roosevelt influence in the spanish american war put him in the focus of american society

Is this statement true or false? before 1850, workers in american mines, mills, and factories were poorly paid, but their safety on the job was always protected by strict laws.

When top-roping is used, how long should the rope be in order to protect the climber throughout the climb?