I believe the Berlin Airlift was necessary because Berlin was located in East Germany (a Soviet satellite) and at this time (the cold war) there were geopolitical tensions between the Soviet Union and the United states. so because of this the only viable option to supply west Berlin was to do an Airlift.
D. She founded more then a dozen new convents where nun were devoted to prayers. and C. She organized a group of nuns called the discalced carmelites
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The 7th president was Andrew Jackson :)
Edward Jenner developed the world's first vaccination between 1797 and 1799, using material from sufferers of cowpox. ... This meant that Jenner was only responsible for the rapid change in understanding how smallpox could be prevented. It was the influence of the government that enabled the change to occur rapidly. Yes