Problem: By 1860, Houston had emerged as a commercial and railroad hub for the export of cotton. Railroad spurs from the Texas inland converged in Houston, where they met rail lines to the ports of Galveston and Beaumont. During the American Civil War, Houston served as a headquarters for General John Bankhead Magruder, who used the city as an organization point for the Battle of Galveston. After the Civil War, Houston businessmen initiated efforts to widen the city's extensive system of bayous so the city could accept more commerce between downtown and the nearby port of Galveston. By 1890, Houston was the railroad center of Texas.
What was Houston known for by 1890?
The answer is the following: railroad center of Texas

Problem: Before the advent of the ASA system, the system of Weston film speed ratings was introduced by Edward Faraday Weston (18781971) and his father Dr. Edward Weston (18501936), a British-born electrical engineer, industrialist and founder of the US-based Weston Electrical Instrument Corporation, with the Weston model 617, one of the earliest photo-electric exposure meters, in August 1932. The meter and film rating system were invented by William Nelson Goodwin, Jr., who worked for them and later received a Howard N. Potts Medal for his contributions to engineering.
Who is credited with creating the film and meter system?
The answer is the following: William Nelson Goodwin, Jr.

Problem: Sentient beings always suffer throughout samsara until they free themselves from this suffering (dukkha) by attaining Nirvana. Then the absence of the first Nidanaignoranceleads to the absence of the others.
What is the first Nidana?
The answer is the following: ignorance

Problem: Though the country's foreign relations, particularly with Western nations, have been strained, relations have thawed since the reforms following the 2010 elections. After years of diplomatic isolation and economic and military sanctions, the United States relaxed curbs on foreign aid to Myanmar in November 2011 and announced the resumption of diplomatic relations on 13 January 2012 The European Union has placed sanctions on Myanmar, including an arms embargo, cessation of trade preferences, and suspension of all aid with the exception of humanitarian aid.
How have international relations developed due to the recent political changes in Burma ?
The answer is the following:
relations have thawed since the reforms following the 2010 elections.