Short answers, pulled from the story.
Avengers: Age of Ultron became the twenty-first film in cinematic history to cross the $1 billion box office threshold on the 15th of May 2015. The film opened with an $84.46 million day in the United States and Canada marking it as the biggest opening day for a superhero film at that time.
Joss Whedon returned to write and direct the sequel after Walt Disney Company CEO Bob Iger announced his involvement in August 2012. He had been undecided about directing during the 2012 San Diego Comic-Con but committed to the role later that year to explore more depth about the characters.
Aaron Taylor-Johnson was confirmed for the role of Quicksilver while Elizabeth Olsen was cast as Scarlet Witch in November 2013. These two characters were introduced by Whedon to add conflict and visual interest since Marvel shared rights to them with 20th Century Fox.
Principal photography began on Tuesday the 11th of February 2014 in Johannesburg South Africa before moving to Shepperton Studios near London in March 2014. Filming also occurred in Fort Bard Italy Aosta Valley region Seoul South Korea Hampshire England Norwich Kent Chittagong Bangladesh and New York state.
Avengers: Age of Ultron grossed $943.8 million in other territories worldwide for a total global sum of $1.403 billion making it the fifth-highest-grossing film of all time upon release. The film earned $459 million in the United States and Canada alone during its theatrical run.