I think most of it is just cultural conditioning, we play major key songs when we're happy and minor key songs when we're sad (though this is changing in modern music). Another part of it could be that minor chords have their midtones clash a bit more with there tonic notes than major chords, it sounds slightly "wrong" to our ears and takes away from the happy effect.
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The Blacksmith was an essential merchant and craftsman in a colonial town. He made indispensable items such as horseshoes, pots, pans, and nails. Blacksmiths (sometimes called ferriers) made numerous goods for farmers including axes, plowshares, cowbells...
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El Greco's work established a foundation for the development of Cubism, a movement in which artists began to abandon a single viewpoint perspective to play with geometric shapes and interlocking planes.