When president johnson took office, what was the state of the conflict in vietnam? check all of the boxes that apply.

2. South Vietnam was in danger of losing the war.

3. Vietnam was receiving increasing amounts of US military aid.

the answer to your question is:

strong-mayor system

radioactive dating, also known as  radioisotope dating  is a process that in  estimating the approximate  age  of  rocks. these data can be analyzed from  the studies dealing with the  decay of the radioactive elements that are present in these rocks. in nature, there are a few types of materials or atoms which are quite unstable and they spontaneously decay or breakdown to form other kinds of atoms.