When did the two-party political system first develop?

just prior to the civil war
shortly after the great depression
soon after the nation was founded
before independence was declared

soon after the nation was founded.

The United States has had a two-party political system almost since its origins. Shortly after the nation was founded, Alexander Hamilton's Federalist Party and Thomas Jefferson's Democratic-Republican Party developed as the only two significant political groups. In modern times, the political arena is dominated by the Republican Party and the Democratic Party.

Throughout US history, no third party has ever won a Presidential election or a majority in either house of Congress.

d. the polar jet stream   lies between the polar easterlies and trade winds should be your answer