  Majorana zero modes are a much sought-after consequence of one-dimensional
topological superconductivity. Here, we show that, in turn, zero modes
accompanying dynamical instanton events strongly enhance -- in some cases even
enable -- superconductivity. We find that the dynamics of a one-dimensional
topological triplet superconductor is governed by a $\theta$ term in the
action. For isotropic triplets, this term enables algebraic charge-$2e$
superconductivity, which is destroyed by fluctuations in nontopological
superconductors. For anisotropic triplets, zero modes suppress quantum phase
slips and stabilize superconductivity over a large region of the phase diagram.
We present predictions of correlation functions and thermodynamics for states
of topologically enhanced superconductivity.
