Answer:
<em>The falling economy.</em>
Explanation: Hope this helps..
The overall trend of spending during presidential campaigns since the 1960´s has shown an enormous increase. The explanation resides in various factors: - inflation (change of the value of the dollar, making necessary more dollars to achieve the same); -also the equation that there are more inhabitants, meaning, more donors. - Since the income of the people increased, there is also more money to donate.
