suspension bridges

the ___ bridge is the earliest form of suspension bridge

rope

these early bridges consisted of vines twisted together to form

cables

this could then be attached to a _____ on each side of the canyon or river

tree

Many years later, a man named ______________ spun wire to create strong cable

John Roebling, wire

Using these cables, he and other engineers were able to build _______ bridges, which were able to cross areas that ______ bridges were not

suspension, beam