What made Xerxes a great leader?

Xerxes I, the Persian king, is often regarded as a great leader due to his ambitious expansion of the Persian Empire, which included notable campaigns against Greece. His ability to mobilize vast resources and maintain control over a diverse empire demonstrates his administrative skills and strategic vision. Additionally, his construction projects, such as the grand palace at Persepolis, showcased both his wealth and his commitment to leaving a lasting legacy. However, his leadership is also marked by controversial decisions, particularly the failed invasion of Greece, which ultimately shaped his historical legacy.