Answer:
Maybe it's no.2 South America
Explanation:
I hope i can help :)
Labor was organized on an international basis
"An increase in scientific and medical discoveries improved life expectancies" is the one reason among the following choices given in the question that <span>is the best possible explanation for the changes in Europe's population since 1750. The correct option among all the options that are given in the question is the first option.</span>
Peter the Hermit was an attentive listener to Pope Urban II's cries and begged that people have to rescue the Holy Sepulchre. He was a monk and was part of the holy men in the audience. Because he was so stirred with the speech of Pope Urban II, he began preaching to men, women, and children in favor of war against the Turks.
He was able to gather many people and that started the Crusade. Alongside other leaders, he led one side of the troop and began the march. People waged to rescue Jerusalem from the Mohammedans. Therefore, the answer to this item is the first choice.