What is the name of the smallest mouse of the Americas, found from the southern U.S. into Central America?

Which scouring powder is named for a mighty Greek warrior who fought in the Trojan War? Which sea is bordered by Georgia on its eastern side and Bulgaria on its western side? Which singer, long associated with Key West and born on Christmas Day, recorded the song "Christmas Island"? Which small Virginia stream, about 30 miles from Washington, D.C., gave its name to two Civil War battles? Besides tennis, which other sport is named in the full title of the All England Club that hosts Wimbledon? Which structure, built for the 1889 Paris Exposition, was the world's tallest man-made structure for about 40 years? Which style of right-slanting type traces back to a handwriting used in the papal chancery of the Vatican? Which daytime talk show host earlier won laughs as a stand-up comic with her all-female comedy act "Girls' Night Out"?