Why did many slaves and freedman ally themselves with the british cause during the american revolution ?

the British offered them freedom. they were not able to offer an environment free of judgement and ridicule but they would pay them and that was better than being enslaved.

i think your answer there is c

either b) they were often feared and despised by other native cultures. or

c) their obsession allowed them to coexist with many other native cultures because of their peaceful nature.