I believe the correct answer is D.
<span>B. During the early 1900s, the populations of US cities located on the West Coast were the highest, but by 2000, the populations of cities located in the Midwest became greater than those of the East Coast</span>
More heat creates more water evaporation which goes up into the sky and when it gets cold enough up there the clouds turn into water and it rains
Answer:
Iron and Bronze Age.
Explanation:
According to the widely accepted Kurgan hypothesis or Steppe theory, the Indo-European language and culture spread in several stages from the Proto-Indo-European Urheimat in the Eurasian Pontic steppes into Western Europe, Central and South Asia, through folk migrations and so-called elite recruitment. The 1st millennium BC was the period of time between from the year 1000 BC to 1 BC.