Which conflict began with a U.S.-led invasion in 2003?

• A. War in Afghanistan
• B. Cuban Missile Crisis
• C. Decolonization
• D. Iraq War

Answer: (D)

This question tests your knowledge of a major modern conflict that began with a U.S.-led invasion in 2003. In March 2003, the United States, with coalition partners, invaded Iraq—Operation Iraqi Freedom—citing concerns about weapons of mass destruction and Saddam Hussein’s regime. The invasion quickly toppled Saddam, but it precipitated a long, contentious postwar period marked by insurgency, occupation challenges, and debates about foreign intervention and nation-building.

The other events don’t fit the 2003 invasion trigger: the War in Afghanistan began in 2001 after the 9/11 attacks; the Cuban Missile Crisis occurred in 1962 during the Cold War; and decolonization describes a broad, mid-20th-century process of colonies gaining independence, not a single invasion in 2003.