Science & Technology After WW2

1234567891011
Across
  1. 2. What kind of phone cables were laid in 1956?
  2. 3. Scientist who introduced the polio vaccine in 1955.
  3. 4. How many major broadcasting networks where operationg during the mid-50s?
  4. 7. In 1952. a record number of 21,269 cases were reported of the illness caused by poliovirus.
  5. 10. In the early 50s, one of the world's longest underwater vehicular tunnels, opened, connecting Brooklyn & Manhattan in NYC. What is it called?
  6. 11. The upper & lower peninsulas of mishigan are connected by the world's longest suspension bridge. What is it called?
Down
  1. 1. The system that would total 41,000 miles of the roadways, linking one end of the country to the other.
  2. 5. Perfected a polio vaccine that could be administrated by mouth.
  3. 6. What month was the ribbon-cutting ceremony along the first portion of the interstate high-way on the 4th 1958?
  4. 8. What pace were the improvements in television technology?
  5. 9. In 1951, what transcontinental dialing services were first begun?