Following Lincoln's assassination in April 1865, Andrew Johnson became president and inaugurated the period of Presidential Reconstruction (1865–67).
The answer is form a hypothesis.
World War I killed more people (9 million combatants and 5 million civilians) and cost more money ($186 billion in direct costs and another $151 billion in indirect costs) than any previous war in history
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Answer:
Economic Factors Most of the studies indicate that migration is primarily motivated by economic factors. In developing countries, low agricultural income, agricultural unemployment and underemployment are considered basic factors pushing the migrants towards developed area with greater job opportunities
Explanation:
During the twentieth century, the federal government of the US country becomes stronger, more powerful, and richer in comparison to the previous years.
<h3>What is the federal government?</h3>
The government in the country of the US is called the federal government. It includes the various states and provinces of the US country which have the power to make relevant laws and take reliable decisions.
The US country became the leading country in the year 1917 in the political world. After world war II, the US country becomes more powerful in the whole world. They become a member of the trading organizations and military organizations of the world. They also had a lead role in political scenarios of the world.
Therefore, the federal government of the US country has developed a lot in the 20th Century.
Learn more about the US in the 20th Century in the given link;
brainly.com/question/15387599
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