The Choctaw Native Americans hoped they would be able to keep their land because of the "Indian Removal Act," authorized by President Andrew Jackson on May 28th, 1830. It said that, "Lands west of the Mississippi in exchange for Indian lands within the existing state borders."
https://www.loc.gov/rr/program/bib/ourdocs/Indian.html
Answer:
1:street lamps are helping to fight the disease.
2:A vaccine is helping to fight the disease.
3:Genetically modified mosquitoes are helping to fight the disease.
To be honest i dont think it changes anything.
B words used in ways that make their precise common meaning clear