How many independent variables should there be in an experiment?

explanation:

you should generally have one independent variable in an experiment. this is because it is the variable you are changing in order to observe the effects it has on the other variables.

The correct answer is - True.

The failed states and the states that in terrible conditions are often the perfect place for the terrorist groups to take refugee. This is because these states are not regulated well, the corruption is very high, large portions of their territories are not properly controlled. All of that enables the terrorist groups to able to occupy whole regions, have their facilities there, set their own rules, being able to keep the military and police away, hold their training and teachings.

These countries are also excellent places for recruitment of new members. Most of the people are very poor and in all desperation some of them will join these groups in order to earn some money, thus making the terrorist groups even stronger over time.