By 1838, all of the following Central American countries became sovereign republics except El Salvador. The correct option among all the options that are given in the question is option "b". The country of El Salvador got its independence in the year 1841. The other countries in the question had already got their independence by 1838.
Madison understood that power can corrupt as seen with the kings of their time. So Madison set up the form of government that relies on separate branches of government that operates under checks and balances. This means that no one branch can get too powerful and overrule the other branches. We see this in modern government in the legislative, executive and judicial branches. Madison improved upon the idea that power cannot be held by one man or a few people.
The words technology and compass are similar in that they both refer to
tools which have at some point been absolutely necessary for the
advancement of human beings, be that through needing to sail the seas in
order to discover new land or launch a rocket into space to discover
new planets.
Migration, trade, conquest, and pursuit of religious freedom.