The positive experiments of immigrants.
The working conditions were terrible during the Industrial Revolution. This lead to unions
This was the Landing Vehicle Tracked (LVT), also sometimes called an "amphtrack" or "amtrac" -- short for "amphibious tractor."
The LVT was used in World War II, notably in the Battle of Tarawa. Tarawa is an atoll, or ring-shaped coral reef, successfully getting soldiers transported across the reef and through shallow waters.
No he actually opposed the making of nuclear missiles everywhere including america