Which of these least likely contributed to the end of the roman empire? a) environmental changes decreased the production of food b) plagues and illnesses weakened the population c) constant war with the persians d) invasion by barbarian peoples

The correct answer is - A) environmental changes decreased the production of food.

During its existence, Rome, did not faced any major challenges from environmental aspect that would reduce the food supplies to a point where it will make a big problem in the country. In times when there were some minor food problems, Rome was just using the food produced in the territories it had under its control, so it was never a major problem during its existence.

the value of the 4 in the hundreds place is 400 while the value of th e 4 in the tens place is 40

400 is way bigger than 40.