The lack of money led to their decline.
The major factors that led to the decline of whaling in the 1900s were overexploitation of whale populations, declining whale numbers, changing public attitudes towards conservation and animal welfare, and the development of alternative sources of energy and materials.
3 factors that led to the end of feudalism was the bubonic plague, the hundreds' years war, and the magna carta
Drought and a decline in trade
France and england
The plague, and wars.
France and england
France and england
Hunting and habitat loss may have led to a a decline in the number of black bears, but they are not endangered or threatened.
The Wright brothers' invention of the airplane led to advancements in air transportation.
The period of disorder after the decline of the Roman Empire led to an extended period of disunity during the Middle Ages that was characterized by feudalism.
The Huns