Many independent agencies and commissions exist within the executive branch. how are the leaders of these groups chosen?
a. popular vote
b. presidential appointment and congressional confirmation
c. a selective hiring process
d. they are commissioned military officers serving their country

The answer is given by the second choice: B. The leaders of independent agencies and commissions within the executive branch are chosen by presidential appointment and congressional confirmation, respectively. The Executive Branch’s power is entrusted to the President of the United States of America. 

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the industrial revolution pushed the world into modern industrialization. it changed the course of history profoundly. it caused rapid urbanization and pushed cities and countries into development. the industrial revolution began in great britain with a series with new inventions which led to the creation of machines and mass production.

this caused the country to gain wealth and money and become an international superpower. it improved transportation and manufacturing inside the country, pushed people to live in urban areas and britain to become the most powerful nation in the world for a while.