What did the Homestead Act of 1862 simulate?

Westward settlement

Which John Green novel adaptation featured Taylor Swift's song 'Sweeter Than Fiction'? Who is known as "The King of Pop"? Which particle has a positive charge within an atom's nucleus? What landmark Supreme Court decision legalized gay marriage nationwide in the United States in 2015? Which game do you control the character Chell solving puzzles designed by a sarcastic AI named GLaDOS?