In April of 1869, he obtained a patent for one of his most important inventions, the air brake. This device enabled trains to be stopped with fail-safe accuracy by the locomotive engineer for the first time and was eventually adopted on the majority of the world's railroads
The Southern Indian Ocean I think
Answer:
Explanation:
Of the five oceans, the one with the greatest average depth is the Pacific, with about 4300 meters.
The reason is that this ocean is located on the great plate of the Pacific whose convergent margins are crossed by deep oceanic trenches under which this plate subducts.
In fact, the greatest ocean depth is also found in this ocean and corresponds to the Challenger Abyss, in the Mariana Trench, which reaches a depth of 11 km.
