Answer:
1,500 miles long built across northern China in the 3rd century BC; it averages 6 meters in width.
Its basic tenet is that no single European power should be allowed to achieve hegemony<span> over a substantial part of the continent and that this is best curtailed by having a small number of ever-changing </span>alliances<span> contend for power, it also meant that none should be able to achieve absolute power.</span>
America’s first political parties emerged in the late 1790s. The Democratic-Republicans were led by Thomas Jefferson. The Federalists were led by George Washington, Alexander Hamilton and John Adams.
The Democratic-Republican Party or the Anti-Administration party (Anti-Federalists) opposed the strong central government that the Constitution established when it went into effect in 1789, and the Federalist Party supported the ratification of the American Constitution. These two parties made up the first two-party system. The conflict over the passage of the federal Constitution of 1787 saw the formation of the first political parties or factions. George Washington served as a uniting force of political parties throughout the first eight years of the country's existence. But after his retirement, the country was divided into two ideologically opposed factions that were soon referred to as the Federalists and Republicans, the country's first two America's political parties.
Learn more about America’s political parties here:
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In 1917, Germany attacked some passengers in submarines from the US that led the US to assist in WW1. Hope this helps!
