Answer is b because it separates the desert and the savana
Answer:
colonies in north america and on the constitutuon of the united states
Explanation:
Francis Cabot Lowell's textile mill at Waltham, Massachusetts, gave rise to the first labor unions in the United States.
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What are labor unions?</h3>
Since the National Labor Relations Act was implemented in 1935, labor unions have been acknowledged by US labor law as organizations that represent employees in a variety of industries. Currently, they concentrate their efforts on collectively bargaining for pay, benefits, and working conditions on behalf of their membership and representing their members in disputes with management over claimed violations of contract clauses. Larger trade unions usually take part in lobbying and electioneering activities on the state and federal levels. The majority of unions in the United States are connected with the AFL-CIO, which was established in 1955, and the Change to Win Federation (now known as the Strategic Organizing Center), which split from the AFL-CIO in 2005.
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A single party system is where a single party has all the power and no opposition or any other party exists. ... In a multiparty system, the number of parties is unlimited. Anyone can establish a party if he meets necessary conditions. This is a true of democracy. And a monarchy is a form of government in which a group, generally a family representing a dynasty, embodies the country's national identity and its head, the monarch, exercises the role of sovereignty.