Final answer:
The US enjoyed early successes in the war primarily due to its vast industrial capacity, the recruitment of fresh troops, and a strategic diplomatic alliance with France after the Battle of Saratoga. These factors combined with effective military leadership and planning contributed to the country's war effort and eventual victories.
Step-by-step explanation:
The primary reason that the US enjoyed successes early in the war can be attributed to a combination of factors, including its vast industrial capacity, the presence of fresh troops, and the diplomatic alliance with the French after the Battle of Saratoga.
The industrial capacity provided the United States with an unmatched ability to produce weapons, supplies, and other war materials. In contrast, European powers, especially Germany, were significantly depleted after years of conflict, running low on resources such as money, fuel, and food.
In addition to industrial might, the US was also aided by the influx of fresh troops, which were crucial in sustaining the war effort when European nations had exhausted their manpower.
Furthermore, the strategic diplomatic alliance with the French brought essential support and turned the American War into a global conflict, which negatively impacted France's economy and eventually led to the French Revolution, altering the political landscape of Europe.
Lastly, the ability to secure enough men, money, food, and supplies, paired with effective military leadership, public support, and strategic planning were essential in ensuring American successes early in the war.