title: How to select specific rows in a data set (R)
body: <p>I have a data set containing some information about certain US states. The row names are states' names.  </p>
  
  <p><a href="https://i.stack.imgur.com/xyea3.png" rel="nofollow noreferrer"><img src="https://i.stack.imgur.com/xyea3.png" alt="enter image description here"></a></p>
  
  <p>I want to select several states' (i.e. "AL" and "CA") information and create a new data set, but how?</p>