Answer:
A
Explanation:
He introduced the IQ formula as the ratio of mental age to chronological age
Answer:
By the passage of the National Origins Act of 1924
Explanation:
The United States government changed immigration restrictions during the !920s by the passage of the National Origins Acts in 1924 which introduced an immigration quota system of 2% of each nationality represented in the 1890 census.
Scott Joplin was the one who pioneered classical ragtime music.
Answer:
Managing servants who look after children managing the household participating in government.
Explanation:
