What is the purpose of brackets in a quotation?

What is the claim in an argumentative text? the facts and data that support a statement of opinion in the text the statement that takes a position on an issue or controversy the explanation of how the evidence in the text supports a reason the quotations from primary sources that are used to validate a fact

Write a précis of "from 'on the duty of civil disobedience'" paragraph 1 by henry david thoreau.

Fortify is a verb that means “to protect and strengthen.” a fortifications is a that means something that protects.