Answer:
Living conditions were deplorable: Built close together, tenements typically lacked adequate windows, rendering them poorly ventilated and dark, and they were frequently in disrepair. ... Vermin were a persistent problem as buildings lacked proper sanitation facilities.
Explanation:
Christopher Columbus was the first explorer to sail what are today the Caribbean Islands between North and South America. He sailed for Spain. Hope it help!
Answer:
The U.S provides countries with assistance in fighting against infectious diseases
Answer:
I would go with B, "populations declined in urban areas"
Explanation:
For all 3, the urban population is much greater in 100 CE than 1000 CE. I find the graphs to be set up in a poor way and you'd expect them to have grown, so forgive me if I'm wrong.