The Louisiana Purchase cost the U.S. about 15 million dollars
A conductor of the underground railroad is called a Quaker
Answer:
tertiary circular reactions.
Explanation:
Ty’s experimentation with the drumsticks is an example of tertiary circular reactions.
It's a period in child's life where children begin a period of trial and error experimentation during their fifth sub stage (12 to 18 months time).
The child may try out different actions and sounds so as to get the attention of its caregiver.
I believe they used a atir