Complex sentence: Hanover received the contract for the World Expo 2000 on the 14th of June 1990, to the late 1990s, the Expo-settlement was established on the Kronsberg.
Split into simpler sentences: Hanover received the contract for the World Expo 2000 on the 14th of June 1990. Through the late 1990s, the Expo-settlement was established on the Kronsberg.