I would choose d
or option 4
Answer: The answer is "New farming techniques leading to more food."
Explanation: It is the only one that is related to agriculture.
America's economy grew by more than 400% between 1860 and 1900
Technological advances, expanding population, improved transportation,
financial innovation, and new business practices combined to fuel this
economic growth
"Titans of Industry" like John D. Rockefeller, Andrew Carnegie, and J.P.
Morgan built monopolies and revolutionized business practices
Laissez faire ideology called for little or no government regulation of
economic affairs
Unskilled urban workers did not share in economic gains, instead
enduring great poverty
An oligarchy is a government in which the ruling power belongs to only a few people.
Answer: Tribal governments provide multiple programs and services, including, but not limited to, social programs, first-responder services, education, workforce development, and energy and land management. They also build and maintain a variety of infrastructure, including roads, bridges, and public buildings.