Because France was richer than Spain at this time and slavery was an integral part of its economy, it turned western Hispaniola into a center of slave trade with staggering differences in population: about 500,000 slaves in the western side of the island as compared with only 15,000 to 30,000 slaves in the eastern side. (scientificamerican.com)
Cats experience an even more staggering difference in return rates, with 38 percent of chipped cats being returned home versus under 2 percent of unchipped ones. (lakeviewpethospital.com)