The Supreme Court's decision in Brown v. Board of Ed. (1954) was important because:
A.)provided free support for private and parochial schools
B.)declared racially segregated public schools unconstitutional
C.)it established free public colleges in the United States
D.)established free public elementary and secondary school in the U. S.

B) declared racially segregated public schools unconstitutional

Explanation:

In Brown v. Board of Education of Topeka (1954) a unanimous Supreme Court declared that racial segregation in public schools is unconstitutional.

The Court declared “separate” educational facilities “inherently unequal.”

Source: Kahn Academy

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b - those executed came from every social and economic class

to replace ineffective because   andrew jackson's spoil system was a deliberate policy after he became president to remove federal employees he considered to be political opponents and replace them with his own supporters.