4. Both allowed people to question the world around them
C. They wanted to ensure that Japan would not fall to communism.
"<span>It led to a large number of causalities on both sides" would be the best option from the list, since the war still dragged on although now with far more men involved, meaning more deaths.</span>
Marco Polo helped European ideas about China develop was that he wrote many books and accounts of his travels to the East, and also brought back many artifacts for Europeans to observe.
