The Congress of Vienna helped ensure peace in Europe by making sure that a common consensus was reached between the leaders of a variety of countries--making it more of a multilateral and multi-beneficial agreement that suited all.
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The Industrial Revolution changed the world by transforming business, economics, and society. These shifts had major effects on the world and continue to shape it today. Before industrialization, most European countries had economies dominated by farming and artisan crafts such as hand-woven cloth.
There are no options to choose from and this question needs to be answered based on research and knowledge. I hope the answer satisfies you. The Indo-European language is thought to have originated around Iran and Azerbaijan. This can be understood from the fact that Arabic is spoken in Saudi Arabia and it is a Semitic language.
