The correct answer here would be C.
A monopoly of market means that a certain company or a trust controls a particular branch of the market. It means there are no other competitors supplying the same kind of products and the one who has the monopoly basically can do whatever he wants product wise. This suffocates the free market and competition which leads to better prices and better products and variety.
Plessy v. Ferguson (1896) and Brown v. Board of Education of Topeka (1954)
The correct answer is letter C
Explanation: This account of the Lewis and Clark Expedition, published in 1814, is based on detailed diaries written by Captains Meriwether Lewis and William Clark, the expedition's leaders. The book begins with "The Life of Captain Lewis", written by Thomas Jefferson, which reproduces Jefferson's detailed instructions to Lewis as to the objectives of the expedition.
Answer: Tectonic plates or plate tectonics
Explanation:
Definition of plate tectonics:
This is a geological theory which states that the earth consist of number of plates which has liquid like substance (lava or magma hot material)in between them that make them float and the move over the mantle and this is where various seismic activity occur. These plates are solid. There are composed of lithospheric material and continental material.
Near these plates it is where the volcanic activity will originate.
During the 1960s, the New Left was a political movement that was part of the student movement. It wanted participatory democracy, or direct individual participation in the decisions that affected the student's lives. It was like a battle cry of the student movement. Tom Hayden was a key figure in this movement. College students involved in this movement fought for civil rights and university reforms as well as protested against the Vietnam War. SDS, or Students for a Democratic Society, was at the core of this movement.