The first amendment.
the first amendment prohibits the government from establishing a religion
The US became a place of industrialization and reform. Many countries started to adapt certain reforms from the US. The US also started to expand, taking up purchases, such as the Louisiana purchase. Later in the 19th century, the US became known as a world power.
The American Recovery and Reinvestment Act (ARRA) was approved by President Barack Obama in 2009, and consisted on a stimulus package released with the aim of preventing the destruction of jobs, fostering the creation of new ones, and boosting the aggregate demand as a mechanism for economic recovery. Therefore, recovery from the recession of 2007-2009 was sought through the Keynesian way.
One negative effect of the spending schedule imposed by the ARRA, was that a great part of the money had to be borrowed. National debt was increased and this led to a deficit situation.
Preemption
This doctrine is centered around the attempt to repel or defeat a perceived imminent offensive or invasion. The aim is to gain a strategic advantage in an impending (allegedly unavoidable) conflict shortly before it materializes into a crisis. Its principles include unilateralism and the use of preventative war.