The foreign policy doctrines of the two Bush's differed because Bush Senior was seen as more of a negotiator and less of a hardliner than his son, Bush Junior who was very into military campaigns. Although Bush Senior did have a few military campaigns which equally proved controversial, Bush Senior allegedly felt that the United States was meant to help countries in need. Bush Junior was much more tough with his stance and made large-scale invasions of countries, as well as created sanctions for many others.
The answer is substitution mutation
Brainliest please :)
Answer: Bull run
Explanation: The first battle of bull run (also known as the first battle
of Manassas) was the first major land battle of the civil war