They used a highly developed system with the first stone drainage system
Answer:
Juneteenth became a state holiday in Texas in 1980, and a number of other states subsequently followed suit. The day is also celebrated outside the United States, with organizations in a number of countries using the day to recognize the end of slavery and to celebrate the culture and achievements of African Americans.
Explanation:
As a Buddhist emperor, Ashoka believed that Buddhism is beneficial for all human beings, as well as animals and plants, so he built a number of stupas. He also well spread Buddhism to neighboring kingdoms.
He is remembered for the Ashoka pillars and edicts, for sending Buddhist monks to Sri Lanka and Central Asia, and for establishing monuments marking several significant sites in the life of Gautama Buddha.