Query: What year was a stagecoach bus line established in Montevideo?
Context: After the end of hostilities, a period of growth and expansion started for the city. In 1853 a stagecoach bus line was established joining Montevideo with the newly formed settlement of Unión and the first natural gas street lights were inaugurated.[citation needed] From 1854 to 1861 the first public sanitation facilities were constructed. In 1856 the Teatro Solís was inaugurated, 15 years after the beginning of its construction.