Checks and balances is the answer.
Answer:
Joseph Jenkins Roberts
Explanation:
Joseph Jenkins Roberts (1809–1876), a wealthy Monrovia merchant who had emigrated in 1829 from Petersburg, Virginia, became the first black ACS governor of Liberia in 1841. In 1848, he was elected the first president of an independent Liberia.
The Atlantic charter was joint declaration released by us president Franklin D.Roosevelt and British Prime Minister Winston church hill on August 14,1941 following a meeting of the two heads of state in Newfoundland.
No Spain wasn't first to have slaves it was Europe who had the first slave's Hope this helps:)
Answer: Vygotsky's
Explanation:
Vygotsky's theory states about development of cognition that takes place through social interactions. He believed that child development can be driven through socio-cultural aspects,language,psychological tools,proximal development zone etc.
According to the question, Mr. Pietrzyk's thinking about children;s development and learning through social interaction is depicting Vygotsky's theory.This helps them in peer meeting and groupings.