Think about all of the inventions you’ve discovered in this lesson. which two inventions changed americans’ lives the most? explain your answer in a few sentences.

Light Bulb and Electricity.

Explanation:

In the 19th Century, many inventions changed Americans' lives but the invention of Electricity and the Light bulb was the most essential. Electricity brought about many inventions like the telephone, the telegraph, etc. Thomas Edison was credited for the invention of the Light bulb. The creation of which changed Americans' lives socially, economically, and also society's structure.  It led to the making of home appliances.

no , per capita income is not a true measure of the development because: -it only tells us about average income not how income is distributed among the people.it only give us an idea of the economic aspect.it is only at the qualitative basis.moreover, income is not only the way of development other factors are also as much as important as income.