The Solís Theatre is Uruguay's oldest theatre. It was built in 1856 and is currently owned by the government of Montevideo. In 1998, the government of Montevideo started a major reconstruction of the theatre, which included two US$110,000 columns designed by Philippe Starck. The reconstruction was completed in 2004, and the theatre reopened in August of that year. The plaza is also the site of the offices of the President of Uruguay (both the Estévez Palace and the Executive Tower). The Artigas Mausoleum is located at the centre of the plaza. Statues include that of José Gervasio Artigas, hero of Uruguay's independence movement; an honour guard keeps vigil at the Mausoleum.
When was The Solis Theater built?
1856

On 6 April 2011, after his proposed "Plan for Stability and Growth IV" (PEC IV) was rejected by the Parliament, Prime Minister José Sócrates announced on national television that the country would request financial assistance from the IMF and the European Financial Stability Facility, as Greece and the Republic of Ireland had done previously. It was the third time that the Portuguese government had requested external financial aid from the IMF—the first occasion occurred in the late 1970s following the Carnation's Revolution. In October 2011, Moody's Investor Services downgraded nine Portuguese banks due to financial weakness.
What provoked the first request from Portugal for financial support?
Carnation's Revolution

Groups are also applied in many other mathematical areas. Mathematical objects are often examined by associating groups to them and studying the properties of the corresponding groups. For example, Henri Poincaré founded what is now called algebraic topology by introducing the fundamental group. By means of this connection, topological properties such as proximity and continuity translate into properties of groups.i[›] For example, elements of the fundamental group are represented by loops. The second image at the right shows some loops in a plane minus a point. The blue loop is considered null-homotopic (and thus irrelevant), because it can be continuously shrunk to a point. The presence of the hole prevents the orange loop from being shrunk to a point. The fundamental group of the plane with a point deleted turns out to be infinite cyclic, generated by the orange loop (or any other loop winding once around the hole). This way, the fundamental group detects the hole.
What are usually analyzed by associating groups to them and studying the elements of the corresponding groups?
Mathematical objects