  We extend the 1/N_c expansion meson-baryon scattering formalism to cases in
which the final state contains more than two particles. We first show that the
leading-order large N_c processes proceed through resonant intermediate states
(e.g., rho N or pi Delta). We then tabulate linear amplitude expressions for
relevant processes and find that the pole structure of baryon resonances can be
uniquely identified by their (non)appearance in eta N or mixed partial-wave pi
Delta final states. We also show that quantitative predictions of pi N to pi
Delta branching ratios predicted at leading order alone do not agree with
measurements, but the inclusion of 1/N_c corrections is ample to explain the
discrepancies.
