What other political party led to the decline of the Socialist Party?

The Socialist Party of America (SPA) was a democratic socialist and social democratic political.  However, it refused to form coalitions with other parties, or even to allow its members to vote for other parties. ... Trotsky and Jay Lovestone caused the traditional Old Guard to leave and form the Social Democratic Federation.

Explanation:

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the main reason that the constitution did not proclaim all men to be free and equal is because of the issue of slavery.

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the colonists were also expected to pay a tax to meet the costs of establishing and manning the borders of the proclamation line which led to the belief that the king had sided with the indians despite pontiac's rebellion, against the interests of the settlers. this contributed to the causes of the american revolution.