Which best explains why Constantinople did not fall until 1453? The city was well protected and repelled attacks by invaders. The city created alliances with Europeans to stop most attacks. The city was far from Byzantine territories and only attacked once. The city created alliances with invaders to stop most attacks.
"The city created alliances with Europeans to stop most attacks" would be the best option from the list, since this city was a trading metropolis, and very few people wanted to see it fall.
