Pagan's rise continued under Alaungsithu (r. 1112–1167), who focused on standardising administrative and economic systems. The king, also known as Sithu I, actively expanded frontier colonies and built new irrigation systems throughout the kingdom. He also introduced standardised weights and measures throughout the country to assist administration as well as trade. The standardisation provided an impetus for the monetisation of Pagan's economy, the full impact of which however would not be felt until later in the 12th century. The kingdom prospered from increased agricultural output as well as from inland and maritime trading networks. Much of the wealth was devoted to temple building. Temple building projects, which began in earnest during Kyansittha's reign, became increasingly grandiose, and began to transition into a distinctively Burman architectural style from earlier Pyu and Mon norms. By the end of Sithu I's reign, Pagan enjoyed a more synthesised culture, an efficient government and a prosperous economy. However a corresponding growth in population also put pressure on "the fixed relationship between productive land and population", forcing the later kings to expand.