it would be the development of Vaccine
For example, Before vaccine was invented, many people in Europe died from small pox. Approximately, small pox alone took around 400,000 of European people each year. (to understand how bad it is, it's important to know that their total population at that time was so small compared to the current population)
The development of vaccine prevented European people during industrial revolution from infected from many type of illness that could easily harm them due to lack of knowledge to treat them.
Answer:
Confederacy and Gettysburg
Explanation:
I just did the assignment :)
The answer is B. Profit was dependent on plantations and slave labor in South America
Answer:
i believe its B sorry if im wrong
Explanation:
The Compromise of 1850 included a much harsher fugitive slave law. It also comprised all of the following, with the exception of Kansas, which joined the Union as a slave state.
A new, more stringent Fugitive Slave Law Congress enacted a harsh fugitive slave statute, requiring authorities in all states and territories to help in the recapture of enslaved persons who had fled to freedom or paid a significant fee.
As the political confrontation between abolitionists in the North and slaveowners in the South escalated, Congress approved the Fugitive Slave Act of 1850, which imposed tougher sanctions for interfering with slaveowners' recovery of runaway slaves.
The legislation jeopardized the safety of all blacks, slave and free, and caused many Northerners to become more outspoken in their support for fugitives.
To learn more about fugitive slave law
brainly.com/question/11972895
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