What was one factor that may have caused Mayan cities to fall into ruin between 800 and 1000 BCE?
А The Olmec invaded Mayan cities.
8 The Spanish conquered the Maya
с Mayan buildings were poorly constructed
D Food shortages occurred due to drought

the french revolution was when many people were persecuted for disagreeing or making separate government

  rrf reerw eref erew er   rwerwe ewer w e

global and free trade

i think i will need more detail to answer if this is a specific question on a test, but technology advancements are good for many industries, such as medicine or food industries, new technology could us in medicine in ways such as new scanners to tell us more about our bodies or new cures or vaccines for diseases.