Answer:
1. Most northern states outlaw slavery.
After the colonists gained independence from the British, Northern states moved to abolish slavery and by 1804, most Northern states had done so.
2. Congress outlaws importation of African Slaves to the US.
In 1807, Congress passed a law that outlawed the importation of African enslaved people to any American port. It took effect on the first day of 1808.
3. Abolitionists grow in number.
More and more people began to see slavery as a moral wrong and so the Abolitionist movement kept growing.
4. The Underground Railroad begins.
With more people opposed to slavery, smuggling enslaved people out of the South became a possibility and so the Underground railroad began and it is estimated that tens of thousands were able to escape using this method.
Operant conditioning is teaching someone something using rewards. Every time they do what you want, they get a reward. So in your example, you'd need to break down the toilet training process a bit. First the child needs to figure out that her body is telling her she has to use the bathroom. Then she needs to learn to tell that to you in time to go. Then she needs to actually go.
Monumental ancient egyptian architectural achievement could be described as the intersection of mathematics and religion.
The calculation of egypt's ancient monument is so complex it's impossible to achieve without advanced math and it used by ancient egyptians for religious purposes.
hope this helps
Answer:
Reductions in Child Mortality. ...
Vaccine-Preventable Diseases. ...
Access to Safe Water and Sanitation. ...
Malaria Prevention and Control.
Explanation:
The average life expectancy of a child born in the U.S. in 1900 was 50 years. By 2010, this number had increased 60% to 80 years.1 Biomedical, epidemiological, and behavioral research combined with public policy played a major role in this gain. Below are major public health milestones of the last 100 years
