The North American colonies enjoyed economic success because of:
(a) Hardworking populations
(b) The practice of monoculture on plantations
(c) The use of slave labour
(d) All of these
(e) None of these
(a) Hardworking populations
(b) The practice of monoculture on plantations
(c) The use of slave labour
(d) All of these
(e) None of these