This would be true. Biowarfare has been common as far back as people vaulting victims of sickness over walls of enemy lands, and chemical and nuclear types of warfare, while more recent, are still considered major weapons of mass destruction.
Answer:
D. Factories and their corresponding jobs were located in cities and created economic opportunities for migrants
Explanation:
A seismograph is used and p waves and s waves are used to determine the distance of the waves
