2/
At the time of European contact, the Bora were reported to number about 25,000.
However, their numbers declined radically as a result of abuses suffered during the rubber boom that started in 1886.
Now only 2000-3000 remain.
The Bora were alleged to be a warlike and cannibalistic people who often attacked neighboring tribes, eating the victims.
3/
Starting in 1886, Europeans arrived in pursuit of rubber, using the native peoples to do the work in exchange for axes, machetes, beads, tin cans, mirrors, and such. The Bora were eager to obtain these things, but after a time rebelled at being enslaved by outsiders. This led to warfare and the massacre of thousands of indigenous people. Those who remained were whipped or beaten until dead, or until they were willing to penetrate the rain forest to collect rubber.