He labeled them tactical planning and operational planning
Answer: B) So they can communicate their results without confusion
Explanation: There are other systems besides the metric system, though the metric is the most commonly used system. In the SI international system, all units are derived from each other, forming a unique international standard. That way, all scientists around the world, or at least most of them using the SI system, can communicate in a unique scientific "language" without confusion and misunderstanding.
Answer:
Although each side received benefits, the north seemed to gain the most. The balance of the Senate was now with the free states, although California often voted with the south on many issues in the 1850s.
In the English-speaking part of the world, two-party system is the most common. For example, in the US the two parties are the Democrats and the Republicans.
In many other countries three-and multiple party systems are more common and it is uncommon that a government is not a coalition of two parties (with one or more parties in the opposition)
