What happened in Iraq after the United States invaded in 2003?
A new parliament and president were rapidly elected.
Iraq quickly became a peaceful democracy.
Sectarian violence increased dramatically.
The Iraqis failed to adopt a new constitution within a couple of years.

It is either the third or fourth.

Explanation:

In March 2003, U.S. forces invaded Iraq vowing to destroy Iraqi weapons of mass destruction (WMD) and end the dictatorial rule of Saddam Hussein. Three weeks after the invasion, Iraqi civilians and U.S. soldiers pull down a statue of Saddam in Baghdad's Firdos Square.

where is the passage