Next-generation precision measurements of neutrino properties will require carefully controlled systematic uncertainties, including theoretical uncertainties in models of neutrino-nucleus interactions. Despite their strengths as a neutrino detector technology, liquid argon time projection chambers (LArTPCs) employ a target material (argon) for which neutrino scattering cross sections remain largely unmeasured. To better constrain neutrino interaction uncertainties for future argon-based neutrino oscillation experiments, the MicroBooNE LArTPC experiment is pursuing a wide-ranging program of cross section measurements. These proceedings present some of the first physics results from that effort, including studies of inclusive charged-current $\nu_\mu$ interactions, neutral pion production, and multi-proton final states.