text: The Bronze Age maryannu caste was characterized by its use of these objects.
full_question: The Bronze Age maryannu caste was characterized by its use of these objects. This technology was countered by a U-shaped formation of infantry called Alexander's mousetrap. A Lusitanian man named Gaius Appuleius Diocles became one of the richest athletes ever by using a version of these objects called a quadriga. Thousands of these objects, the highest number ever assembled, clashed at the Battle of Kadesh. Fans of a sport using these objects made up the Green and Blue factions that clashed during the Nika riots in Justinian's Constantinople. For 10 points, name these horse-drawn vehicles that were raced in the Circus Maximus and Hippodrome.
first_sentence: The Bronze Age maryannu caste was characterized by its use of these objects.
raw_answer: chariots [or quadriga until it is read]