No. 7: Worth Its Weight in Gold

In late 1830, Nash County, N.C. plantation owner Nicholas Arrington accepted Antonio Lopez de Santa Anna’s challenge to a cockfight. Arrington and about a dozen friends spent six months crossing the country with more than 300 gamecocks in a dozen mule-drawn wagons to meet the Mexican president outside modern-day El Paso in April the following year.

No. 6: The Society for Prevention

Today, almost 200 years after the formation of the SPCA in London, there are satellite organizations in countries all over the globe and in many major cities. 16 years after Broome’s meeting, the crown will grant it a royal commission, and its members will dominate the politics and business of animal law in the country, and elsewhere in the world, for at least the next two centuries.