Rain was unpredictable, and the soil was difficult to plow.
Answer:
The labor history of the United States describes the history of organized labor, US labor law, and more general history of working people, in the United States. Beginning in the 1930s, unions became important allies of the Democratic Party. Some historians question why a Labor Party did not emerge in the United States, in contrast to Western Europe.[1]
The nature and power of organized labor is the outcome of historical tensions among counter-acting forces involving workplace rights, wages, working hours, political expression, labor laws, and other working conditions. Organized unions and their umbrella labor federations such as the AFL–CIO and citywide federations have competed, evolved, merged, and split against a backdrop of changing values and priorities, and periodic federal government intervention.
Explanation:
I would go with D. All of the above. Even though I don't know about the Song/Tang Dynasties, I know for sure that they invented those things. So it is D.
The republican party replaced the whig party
Explanation:
The economy of the Soviet Union was based on state ownership of the means of production, collective farming, and industrial manufacturing. The highly centralized Soviet-type economic planning was managed by the administrative-command system.
