In what way do the states serve as laboratories for federal policy? a. The Supreme Court regularly tests the validity of state laws.
b. States introduce laws that the federal government adopts.
c. States are allowed to choose which federal laws to enforce.
d. Federal hospitals provide regional data for fighting diseases.

Why is it useful for historians to base certain studies on the analysis of historical themes

Explain one major pattern of cultural interaction between nomadic and sednetary socities in afro eurasia before 1450 ce

Read the excerpt below and answer the question. obierika was a man who thought about things. when the will of the goddess had been done, he sat down in his obi and mourned his friend’s calamity. why should a man suffer so grievously for an offense he had committed inadvertently? (p. 125) based on the context clues, the best definition for the word “calamity” in the excerpt above is disaster sadness luck indifference