What was the achievements of the Xia Dynasty?

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Explanation:

The Xia dynasty is said to be the first to irrigate, produce cast bronze, and build a strong army. It used oracle bones and had a calendar. Xi Zhong is credited in legend with inventing a wheeled vehicle. He used a compass, square, and rule.

they have different colored collars

"globalization has greatly impacted the united states and american citizens. first and foremost, globalization has spread american influence throughout the world. globalization has opened up more markets for the united states, which in effect american companies sell their products worldwide. there has been a rise of multinational corporations and their influence has greatly increased."