Answer:
What do you mean do you have a worksheet
Explanation:
Blacks were the least group for aid.
Beavers. they prevent floods, droughts, and forest fires
Butterflies. they also pollinate plants
Bats. they eat bugs that keeps the population under control and protect crops
As I recall it was rolled-steel girders riveted together, probably from shipbuilding, together with steam-powered winches and an abundance of cheap steel. As opposed to European cathedrals erected with animal-powered winches and with more expensive forged iron bracing (one of the big cathedrals has a kind or iron corset to keep the walls from bursting outwards).