If you can't fly then run, if you can't run then walk, if you can't walk then crawl, but whatever you do you have to keep moving forward what does he mean

Began during presidency of john q. adams tariff of 1828 and 1832 states’ rights versus federal authority john c. calhoun’s ‘proclamation to the people of south carolina’ concluded during the presidency of andrew jackson is which event are these characteristics describing