use of commercially produced fertilizers
Note: industrial revolution to agriculture
Hope this helps
A hero is someone who inspires you. Someone you can look up to. Someone who always tries to do the right thing all the time. Like a police officer or a fireman. Heck, even a teacher. Personally my hero is Dead Pool because he's funny. But if I'm being serious my real hero is the ones who risk their lives to recue the little kittens and puppies everyday and give them a loving furever home. :D
Hello!
This would be considered a primary source since it came directly from Hillary Clinton. If it were a paraphrased version of her speech, for example, then it would be considered a secondary source.
I hope this helps you! have a great day!
</em></h2>