The lightbulb affected peoples lives most because people were able to stay up past sundown, and work longer hours.
The steamboat. it helped travel rivers upstream
Answer:
B. a plan for rebuilding Europe after WWII
Explanation:
The Marshall Plan was an American initiative passed in 1948 for foreign aid to Western Europe. The United States transferred over $12 billion in economic recovery programs to Western European economies after the end of World War II. They used this plan as a way to rebuild Europe.