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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treaties

explanation:

disease was the number one killer of native peoples. they had had little exposure to the diseases of europe. this led to some villages being almost completely wiped out and some tribes destroyed.