In case you needed anymore convincing that the problem of gun violence is extremely interconnected in America.

This article by Business Insider has three interactive maps (using 2012 data):

• how many people are employed in the gun industry in each of the states
• how many background checks the FBI did on people wanting to buy guns in each state
• how the number of background checks done by the FBI increased or decreased from 2011
  

And here’s some important numbers from the article:

• in 2012, the American gun industry totaled about $12 billion
• in 2011, American gun companies paid more than $5 billion in federal, state and excise taxes
• 98,759 people were employed by the gun industry in 2012
• there are 3,505 people employed in the gun industry in Pennsylvania
• the FBI did 19,463,862 background checks in 2012 for people wanting to buy guns (over 3 million more than 2011)
• 968,534 people wanted to buy guns in PA in 2012 (249,600 more than in 2011)