After the defeat of Russia Japan focus on the expansion of its empire beginning with "China," since this presented them with the greatest potential in terms of harvesting natural resources.
During this era, human technology boomed. In this era, nomads have started farming. Nomads have stopped moving from one place to another. They have started forging metal tools. They also started pastoralism. They have communities and tribe. They were able to create a system on their own.
The American West was indeed a land of great opportunity from 1865 to 1900 in the sense that there was an abundance of land and resources available to all those willing to go west.
The correct answer is D) nothing specific
At that time, the US focused on other things such as repairing Europe and ensuring that it's economy was the strongest in the world. It was not so important for the US that Mao Zedong took over China.
They argued about ratification and how many states would need to agree for the Constitution to take effect is the answer that summarizes the main argument between the Federalists and Anti-Federalists during the Constitutional Convention. The correct option among all the options that are given in the question is the last option.