The conventional rule is to take the plural form of the verb when two nouns are joined by the conjunction 'and'. However, there are exceptions. Only then can you break the rule.
When the two nouns refer to one thing only, then you can use the single form. For example: The president and the CEO joins the meeting today. In this example, the president and CEO apply to one person only. Hence, you use the singular form of the verb.
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Answer:
Russia
Explanation:
Tax and trade reforms allowed Russia to expand its treasury between the year 1680 and 1724. Peter the Great's legislation covered every aspect of life in Russia, and his reforms contributed greatly to Russia's military successes and the increase in profit revenue and productivity of the nations workers.
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