There was a prejudice among the black and white people in the United States during the 20th century. Blacks were segregated from whites and racial discrimination was rampant until Martin Luther King Jr. stood up for the rights of the black people. The government is trying their best to be fair between blacks and whites.
It was decided to a 7-1 majority ruled under the constitutionality of racial segregation laws under the “separate but equal” doctrine
Under the terms of the Articles of Confederation, each state was authorized toretain its role as a sovereign, independent entity, with every authority notspecifically assigned to the national government. For taxing purposes, each state was to meet a quota determined by the value of granted or surveyed land in<span>order to cover the costs of the war against Britain.
</span>
Yes, you are correct about change of water into water vapours , also you will think it is doesn't have any importance and is waste for the plant energy. But it is a “NECESSARY EVIL” as it cools down the plant , transport water,minerals and also Plant hormones,etc. May you got your answer