The arrival of Europeans of the Old World to the New World brought forth a transatlantic trade referred to as the Columbian Exchange. This was a wide transfer of foods, livestock, disease, and culture in the 15th and 16th centuries that truly changed the course of human history. To the Old World came goods such as tomatoes, maize (corn), and turkey, while to the New World, cows, horses, and sugarcane were introduced (these are only some of the many exchanged goods of the Columbian Exchange).
However, what many scholars deem as the most important and devastating was disease. Native Americans (including Mesoamerican and South American inhabitants) had not been in contact with New World diseases such as smallpox, measles, cholera, malaria, or typhus. Epidemics wiped out entire civilizations and resulted in the genocides of an estimated 40-50 million.
On another note, Spanish conquistadors took over the pre-Columbian world. Hernán Cortés conquered the Aztecs while Francisco Pizarro subdued the Incas. Both were aided with advanced with guns and steel weapons, but mainly with disease. A third of the Aztecs died due to smallpox, and the Incans saw a 93% declination in their population
The French outnumbered the British fleet at Yorktown that is on a peninsula, facing the York River. The Continental military had no naval power to block the British Navy from getting into the Chesapeake Bay that resulted in Washington, and his generals to come up with a solution to trap the British Army and force them to <em>surrender</em> was through the help of the French Navy who played a critical <em>role</em> to block the British Navy from accessing and entering the Bay support. The French land troops further bolstered the Continental Army but it was the Naval support that truly turned the tide and made surrender the only option for Lord Cornwallis and his British Army.
Answer:
In America, third parties have practically no electoral influence at the federal or state levels, and very little influence at the local level, where a few candidates have achieved good results in municipal governments or local legislatures.
Therefore, given this reduced influence, I consider that the two-party system is the correct one for the best development of political activity in a nation, since the two predominant political parties channel the majority ideologies, filtering their internal differences in the elections. primaries, and thus facing two totally different positions in the national elections. In this way, extremisms or clearly disruptive positions are filtered by the system itself, obtaining an almost zero number of votes compared to the majority ideologies.
It was the "c. introduction of the assembly line" that enabled mass production in the 1920s, since this meant that products could be made with a division of labor.