Industrialisation was developed in European countries . They needed markets for their products and access to raw materials. Accumulated capital kept in banks was also to put in safe investment opportunities in Asia and Africa . New industrial powers started competing with each other . So this created conditions for modern wars.
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Yes industrialisation has led to modern wars 
1)it is leading to more technological weapons
2)more impact on human health and disasters
 the best example is the bombs like agent orange,white phosphorous which was used on vietnam by the americans

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