Mainly through better advancement in technology and our understanding of engineering. What with us going from living in caves to making wooden homes to now living in steel and concrete.
I assume the answer is true. There would have to be more trade, it comes with industrialization. Sorry I couldn't help more!
A landowner who allows others to farm his fields ( according to apex )
they had a lot of drives for different supplies and war bond is another
Answer:
The answer is B, The bubonic plague spread across Eurasia.