In this excerpt from president kennedy's 1963 civil rights address, he included the examples of american troops in vietnam and west berlin for what purpose?

"today, we are committed to a worldwide struggle to promote and protect the rights of all who wish to be free. and when americans are sent to vietnam or west berlin, we do not ask for whites only. it ought to be possible, therefore, for american students of any color to attend any public institution they select without having to be backed up by troops."

a. the astrolabe could determine the correct latitudinal location of the ship

in mcculloch v. maryland (1819) the supreme court ruled that congress had implied powers under the necessary and proper clause of article i, section 8 of the constitution to create the second bank of the united states and that the state of maryland lacked the power to tax the bank.

gibbons v. ogden, (1824), was a landmark decision in which the supreme court of the united states held that the power to regulate interstate commerce, granted to congress by the commerce clause of the united states constitution, encompassed the power to regulate navigation.