The answer would the Columbian Exchange.
Answer:
4
Explanation:
a dynasty is a line of rulers of a country. 4 seems to fit this description the most accurately
<span> how nationalism and imperialism contributed to the outbreak of ww1 for example, was won after costly wars against native tribes like the Zulus, then European imperialism in America, the United States also engaged in a degree German Weltpolitik and 'gunboat diplomacy' in both France and Britain.</span>
The Korean War or conflict can be compared to the Vietnam War. The basic reason behind the United States taking a active role in these wars was to stop independent nations falling under communist control.
