Maybe wood is the most common resource
The answer is yes. Texas Gov. Greg Abbott uses a wheelchair. He became partly paralyzed in 1984 after an accident. Governor Abbott, who was 26 at that time, went out for an afternoon jog in the River Oaks neighborhood of Houston when an oak tree, deteriorated by a recent storm, fell on him.
Because he was going to be a dictator on the Roman Empire.
Answer: Internal dissension or external pressure