Answer:
New technologies and methods, such as improved fertilization and crop rotation, greatly increased food production.
Explanation:
This increased agricultural efficiency meant that less people were needed to work on farms and more could seek employment in growing urban industries
Ida Tarbell is the au<span>thor</span>
The draft is one major way
the second would be the change from peace time production to war production hope this helps sorry if it doesnt
Number 7 is: c) Brain drains
Number 8 is: b) Low levels of crime
Number 9 is: b) Net migration
