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Darina [25.2K]
4 years ago
8

Most americans born before 1970 have a permanent scar on their shoulders from the smallpox vaccine. Why don't younger americans

have one?
Social Studies
1 answer:
Ivanshal [37]4 years ago
8 0

I believe the answer is: Smallpox has been eradicated by a worldwide vaccination program

Vaccines develop an immunity toward the virus. In order to survive, virus need to obtain a host so they could replicate. Due to the vaccine, the viruses cannot find these hosts. Because of this, smallpox virus started to gradually decreased and eventually eradicated.

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What's the most important hand signal that you and the helper should agree on?
mina [271]
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4 0
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North American land claims changed drastically
Alekssandra [29.7K]

In 1763, the map shows that:

  • Britain established the Proclamation Line of 1763 to  try to limit colonial expansion.
  • The French had lost nearly all their territory by  1763.

The French and Indian War ended in defeat for the French in 1763 and they signed a treaty with Great Britain by which:

  • they lost virtually all their possessions in North America
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When the British received all this new territory, they did not want the colonists in the 13 colonies to move into them so they issued the Proclamation Line of 1763 that prohibited colonists from moving into those areas.

In conclusion, the British received a lot of new territory as a result of the French and Indian War but they prohibited the colonists from moving into it.

<em>Find out more at brainly.com/question/18300857.</em>

6 0
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