Answer:
Examples of a secondary source are: Publications such as textbooks, magazine articles, book reviews, commentaries, encyclopedias, almanacs.
Answer:
the answer is A 50 mile stretch of the santa Fe trail
Explanation:
In May 1985, Gorbachev gave a speech in Leningrad in which he admitted the slowing of economic development, and inadequate living standards. Gorbachev and his team of economic advisors then introduced more fundamental reforms, which became known as perestroika (restructuring).