Primary sources are sources that are reliable and that were written from someone that was alive and presenced the event. Your answer would be D!
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Elvis presley (1956) did his first single "heartbreak hotel" b/w "I Was The One' was a national breaktrough
The correct answer should be the third one you listed. The "current drag" then is a device that is used in order to measure the sub-surface currents. This device and the measurements it provides are extremely important for the field of oceanography which studies the aspects of the oceans both the physical and the biological ones.
Explanation:
After many long and difficult meetings, Kennedy decided to place a naval blockade, or a ring of ships, around Cuba. The aim of this "quarantine," as he called it, was to prevent the Soviets from bringing in more military supplies. He demanded the removal of the missiles already there and the destruction of the sites.
I think the correct answer from the choices listed above is option D. The tactic that Charles Townshend use to increase British control of the American colonies would be that created new taxes on the American colonists to raise revenue. Hope this answers the question.