What was the most important feature that shaped the era of new imperialism but not the era of old imperialism

The Industrial Revolution was one important feature of new imperialism, which not only freed the colonies and began the formation of an independent state, but also declared bourgeois liberties while retaining the slavery of blacks.

this defines the ability for a flex item to grow if necessary. it accepts a unitless value that serves as a proportion. it dictates what amount of the available space inside the flex container the item should take up.

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after the roman empire, the catholic church began to unify by taking on many duties of a government.