Why does the Liberty Bell have a crack in it?

Explanation:

(☞ﾟヮﾟ)☞Shoddy craftsmanship

It's a common myth that enthusiastic patriots cracked the Liberty Bell while celebrating on July 4, 1776. But the truth is that the bell has been suffering from repeated cracks since it was first (poorly) cast. While the mistake has been addressed multiple times over the years, that persistent split keeps coming back. According to National Geographic, the crack we see today showed up at some point in the 19th century—though no one can agree on exactly when it popped up.

The metal that it was made out of was too weak and cracked during a test strike

Explanation:

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four sitting presidents have been assassinated while in office but the first was abraham lincoln,

the industrial revolution pushed the world into modern industrialization. it changed the course of history profoundly. it caused rapid urbanization and pushed cities and countries into development. the industrial revolution began in great britain with a series with new inventions which led to the creation of machines and mass production.

this caused the country to gain wealth and money and become an international superpower. it improved transportation and manufacturing inside the country, pushed people to live in urban areas and britain to become the most powerful nation in the world for a while.