It allows memory b cells to remember the virus and that makes the virus completely immune. So, if there were a real situation in which the individual got the real form of the virus, then the immune system would act quickly in neutralizing the situation; hence, why vaccines are very important.
It was about seven billion
this is according to the United States Census Bureau, which argued that the world was seven billion as in March 2012. The United Nations on the other hand asserts that, however, the world population reached the seven billion mark in 2011. Currently the population stands at 7.6 billion.
The Truman Doctrine promised American help to any country that was threatened by the economic and political system known as the Soviet Union (Russia).
This was done because of the red scare..and fear of communism.
Thus, your answer.
Andrew Jackson was born in 1767 in the Waxhaws region between North Carolina and South Carolina. A lawyer and a landowner, he became a national war hero after defeating the British in the Battle of New Orleans during the War of 1812. Jackson was elected the seventh president of the United States in 1828.P
