What are some social studies words/vocabulary that starts with the letters X, Y, Z and Q (5-7th grade words)

Xenophobia, meaning prejudice/bias against foreign countries

Social studies include geography, so maybe places can apply:

Yemen, Yukon

Zimbabwe, Zambia

Qatar, Quebec

Other stuff: (Including history)

Ypres, where important battles of WWII took place

Yuan, Chinese dollars

Quran, Islamic religious text

Zeus, Greek God