graph. There are a lot of moving parts here, so I’ve commented each line to indicate what it does.</p>
<div class="sourceCode" id="cb7"><html><body><pre class="r"><span class="fu">ggplot</span>() + <span class="co">#call ggplot</span>
  <span class="fu">geom_sf</span>(<span class="kw">data</span><span class="kw">=</span><span class="no">states_sf</span>) + <span class="co"># map the shape files to the map of the USA</span>
  <span class="fu">geom_sf</span>(<span class="kw">data</span><span class="kw">=</s