The name for a noble who served a more powerful noble or lord

What was the original design for washington’s streets?!

How did women’s roles in the workforce change during world war i?

Consider the events in alfred wegener's life that led to his development of the continental drift hypothesis. review the items below and determine whether each item is (1) an observation that led alfred wegener to develop his continental drift hypothesis, or (2) evidence wegener gathered to support his proposal.