Simplify the following text for a Grade 13 native English-speaking person.
Original: Anna Louise Strong ( November 24 , 1885 â `` March 29 , 1970 ) was a twentieth-century American journalist and activist , best known for her reporting on and support for communist movements in the Soviet Union and the People 's Republic of China .
Simplified: Anna Louise Strong ( November 24 , 1885 â `` March 29 , 1970 ) was an American journalist and activist who reported on communist movements in the Soviet Union and the People 's Republic of China .