If wildfires are dangerous to humans why are some set intentionally by forest rangers?

Yes, wildfires are dangerous but there are fires intentionally set by forest officials. They actually do it on purpose. The two types of forest fires set are called prescribed or controlled burn.

In both of these method, fire can burn unwanted plants making more space for appropriate trees to grow. It can also save trees from insect infestations and other invasive plant species. 

pennsylvania pennsylvania colony was a proprietary colony founded when william penn was awarded a charter by king charles ii in 1681. he set up the colony as one of religious freedom. the government included a representative legislature with popularly elected officials. all taxpaying freemen could vote.

i hope this

wait history, who want to talk about history, boring.