What disease impacted the population in the new world

When the Europeans traveled over to the new world in search for expansion, they brought over several deadly plagues, viruses, and bacteria. Those that had the largest impact were: smallpox, measles, typhus, and cholera. The Native Americans had no developed immunity for these diseases and thus suffered immense casualties.

I'm not sure what exact disease you're looking for but I hope I narrowed it down for you to those four :)

president franklin roosevelt supported the tva as part of his first new deal measures approved by congress in 1933. this new agency was designed to control floods, produce electric power, and improve the lives of people living in the tennessee valley. the tva accomplished many of these goals despite problems.

b: to eliminate competition from other farmers