Brown V. Board of Education was a landmark decision enacted by the US Supreme Court in 1954, that abolished segregation in public schools and understood that the 'separate but equal' principle that had governed such procedures was violating the Equal Protection Clause and therefore, unconstitutional. This clause was introduced by the 14th amendtment to the US Constitution during the Reconstruction Era, aiming to guarantee equality of right to all US citizens.
This decision overturned the former Plessy v. Ferguson decision of 1896, that had understood that the 'separate but equal' principle did not violate the Equal Protection clause and therefore it enabled segregation.
Texas is a very large state and may have ruined the balance between slave and free state
Explanation:
Texas would be under the line for slave states and since Texas was a massive state, the north feared that the south would gain an upper hand in the conflict between slave and free state. Eventually Maine was created to fix this.