Alfred Wegener proposed that all the countries were once part of a super-continent called a. Panwanaland
b. Earth 1
c. Panfrya
d. Pangaea​

D. Pangea

Wegener proposed that the continents were once compressed into a single protocontinent which he called Pangaea, meaning "all lands", and over time they have drifted apart into their current distribution.

Blood transfusions were rarely done and often fatal; they were outlawed until the nineteenth century.