Answer: i'd say multi-party system
Answer:
The answer should be: Companies replaced hand-operated brakes with air brakes on trains.
Explanation:
You have to think how hard it was for trains to stop with hand operated brakes. Trains go fast, and not stopping in time can be dangerous. Hope this helped :)
Explanation:
separate themselves from those who are like them
The supply curve demonstrates the relationship between a good's price and the quantity producers are willing and able to supply. The upward sloping line demonstrates this direct relationship: as the price rises, the quantity supplied increases; as price decreases, quantity supplied decreases.
plz mark me as brainliest if this helped :)
