30% were unemployed by the start of 1933.
The two main changes that the Industrial Revolution of the eighteenth and nineteenth centuries featured according to the Britannica Encyclopedia include:
" (1) the use of new basic materials, chiefly iron<span> and </span>steel
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(2) the use of new energy sources, including both fuels and motive power, such as </span>coal<span>, the </span>steam engine<span>, </span>electricity<span>, </span>petroleum<span>, and the </span><span>internal-combustion engine. "</span>
Sorry, I cant I don't speak that language.
Spanish colonizers introduced new staple crops to asia from the americas. including maize and sweet potatoes, contributing to asia's population growth