Today's show explains why both main U.S. presidential candidates are so focused on a handful of states -- and why they're considered "battlegrounds." We're reporting on the catastrophic flooding that struck Spain this week. We're marking historic events related to the Sistine Chapel and a Portuguese earthquake. We're explaining the origin of the phrase "bury the hatchet" and taking you inside a historic Polish chocolate factory. And maybe you can help us figure out what a 100-year-old contraption was used for!

This news quiz covers topics featured throughout the week on The World from A to Z:

1. What type of bacteria, which is believed to have contaminated onions used on some McDonald’s hamburgers, was linked to a dangerous disease outbreak in several U.S. states?

2. Who was U.S. president in 1886, when the Statue of Liberty Enlightening the World (its full name) was presented to the public?

3. What is the name of the group of U.S. electors (2 words) that represents the states and ultimately decides the president?

4. What international organization was founded on October 29, 1863 with the overarching goal of caring for wounded troops in war, regardless of what side they were on?

5. In what low-income Asian country has a “mini Paris” been built in the capital of Phnom Penh, offering French-inspired architecture for those who can afford to live in the luxury community?

6. What nation, according to European and American officials, recently sent thousands of its troops to Russia with the apparent goal of assisting Russian forces in their war with Ukraine?

7. The Armistice of Mudros, which was signed aboard a British battleship on October 30, 1918, marked the surrender of the Ottoman Empire in what international conflict?

8. A recently released U.S. government survey indicated increased rates of anxiety and depression for teenagers who reported daily screen time of at least how many hours?

9. A consumer expert featured Thursday suggested that some Americans are waiting to make large purchases until after what event, when they believe there’ll be more economic certainty?

10. What European nation was struck by catastrophic flooding – reportedly the worst in more than 50 years – after torrential rain fell earlier this week?