Air Breaks.
Rocky mountains
The mountains.
Alot of things . Ask Quizlet
the train was made in 1860 bye charles pearson ,he lived in wisconsyn and he said thall shy make a train not onley to ride but to travel
It made travel easier and fasterIt provided safer travelAnd it made more money for the creators :)
it made roads safer to travel as more cars were made, bought and used on the roads. also kept accidents from happening
Roads have become safer over the years because of paving, and universal traffic signs. Also, improving the safety features of cars has made roads safer.
it made a quicker way to travel up and down then an elevator and was safer if you got stuck
The innovation that will make it safer for trains to stop is Positive Train Control (PTC). This is GPS-based safety technology that has the ability to prevent train-to-train collisions, over-speed derailments, unauthorized incursion into work zones and train movement from switches left in the wrong position. PTC monitors and, if need be, controls train movement in case human error occurs. PTC may also bring trains to a safe stop if there is a natural disaster.
ghengis khan was the one who made the silk road safer.
Philadelphia is a man-made feature as it is a city that was founded by William Penn in 1682. The city was carefully planned and developed by its founders, rather than being a naturally occurring geographical feature.
Transportation (e.g., airline, train, bus)