A popular model used to illustrate the concept of opportunity cost is called a. the production possibilities frontier.
Answer:
Until the Mexican-American War (1846–48) only a few Americans—explorers, soldiers, trappers, sheep drivers—visited Arizona. In 1851 the U.S. Army Corps of Engineers sent several expeditions into Arizona to find a suitable route on which to build a wagon road to California. To protect travelers, miners, and other settlers from Native Americans, the U.S. government began to locate army posts at key sites. In 1883 workers completed the Atchison, Topeka and Santa Fe Railway across northern Arizona, thereby linking St. Louis, Missouri, with California; that same year the Southern Pacific Railroad completed a line from New Orleans to Los Angeles by way of Tucson and Yuma.
Explanation:
1) He founded the Protestant Reformation
2) Made the Bible available to those who couldn't have it before
3) Under the threats of death and arrest, he continued to preach his message, a feat many wouldn't dream of attempting
4) He organized schools, and wrote instructions for the teachers and pastors there as well.
Paraphrased from ThoughtCo.
I think the United States help Western European countries regain their economic strength in order to hold off the threat of communism by initiating the Marshall Plan.
raising the cost of some medicines
doubling the production of medicines
decreasing life expectancy rates
increasing infant mortality rates
