 Pagan's several water management projects in the dry zone provided Upper Burma with an enduring economic base to dominate the rest of the country.In the areas of city planning and temple design, Pagan architecture borrowed heavily from existing Pyu architectural practices, which in turn were based on various Indian styles.Pagan-era city planning largely followed Pyu patterns, the most notable being the use of 12 gates, for each of the signs of the zodiac.