Question

List some ways that modern cities in developed countries have improved sanitation conditions over the last 200 years.

Answer 1

1. Regular trash pick up
2. Regular street cleaning
3. The placement of trash cans throughout cities

Answer 2

Answer:

They can build pipes for clean water, and building toilets can also help get rid of unhygienic.... You know Also, hygiene education would help too.

Hope that helped ya, vote, thanks, and brainliest. Have an great day! :D