Pascal's principle is a principle in fluid mechanics that states that a change in pressure applied to an enclosed fluid will spread uniformly throughout the fluid. This principle explains how different hydraulic systems work. Hydraulic systems are contraptions that use Pascal's principle as a base for how they work. Hydraulics use liquids because they can move a lot, unlike solids but, they can't be compressed like gases which makes them the best option for hydraulics. Hydraulics can be used in a variety of applications including heavy machinery, brakes, and lifts. Hydraulic lifts specifically are very important because they provide versatile and efficient means of lifting heavy loads and moving them from one location to another with minimum labor. Hydraulic lifts can lift very heavy loads, making them ideal contraptions for situations in which heavy objects need to be lifted and moved. They can also be controlled very precisely, allowing for an accurate position of the load being lifted. As well as being controlled precisely, they are also very safe and can be equipped with various safety features including emergency stop buttons and overload protection. Overall, hydraulic lifts are important because they provide a safe, reliable, and efficient means of lifting heavy loads and moving them from one location to another. They are used in a wide range of applications, including manufacturing, construction, and transportation, and have become an essential tool for many industries.