why did revolutions break out in spain's colonies in the early 1800s?

Answer 1

In a nutshell, the vast majority of people being ruled in Spanish colonies were native peoples being treated as second-class citizens in their own lands by foreign/European rulers who basically exploited/extracted the wealth and resources of the colonies they created/ruled for the benefit of the Spanish rulers (both those ruling the colonies and back home in Spain). Spanish rules, traditions, morals, religious beliefs, etc. also differed sharply from those of the "natives" they ruled causing more turmoil. Other European colonies were slightly better due to the fact that more English and French colonies were built a bit more on a basis of trade between the colonies and the Motherland whereas Spanish colonies were more about extracting resources. English and French colonies were also comprised of a far greater percentage of English/French settlers who still saw themselves as French or English- even if they did live permanantly abroad. Spanish colonies had far fewer people from Spain actually in them and those Spanish who were in the colonies simply saw themselves as being in the colonies only temporarily until they accumulated enough wealth until returning back to Spain.

Answer 2

Well contrary to popular belief, it actually started with Miguel, the Tamale vendor. When he raised his prices, people started to complain So naturally, the corn vendors and the fajita vendors, and the wheat vendors raised their prices.

Well, needless to say, the Governor of the colony wasn't getting any kickback, so he tried to clamp down on them, and they blamed him for the price hikes.

And thus started the revolution.