All modern Vehicles have<span> internal steel beams in the door, which helps to protect the passenger compartment.
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Just a few decades ago, passenger cabins were particularly vulnerable to a crash, especially if this occurred from the side of the car.
Car manufactures have spent considering time, research and money into developing light-weight and ergonomic-friendly safety measures to protect passengers.
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It just kinda did what it wanted to do no explanation
The British government relaxed rules regulating trade for the American colonies in the late 1600s because the British hoped the colonies would become wealthier and spend more on manufactured goods from Britain.