Probably because any activities related to environment protection require a change of mentality and habits and participation of everyone in order to be fruitful.
I believe that they were actually labeled as observers. Or are there multiple choices.
Generally speaking, increases in trade and commerce that occurred during the late Middle Ages in Europe resulted in "<span>2) the development of more towns and cities," since almost everybody benefited from trading with other nations, and GDP rose dramatically. </span>
Answer:
the answer should be A i believe
