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Vesnalui [34]
3 years ago
6

What was unique about Roman concrete

Social Studies
1 answer:
spin [16.1K]3 years ago
8 0

Romans made concrete by mixing lime and volcanic rock to form a mortar. To build underwater structures, this mortar and volcanic tuff were packed into wooden forms.In addition to being more durable than Portland cement

Explanation:

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What is the difference between delegated, reserved and concurrent powers?
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Delegated, presumably enumerated, powers are those that the Constitution say belong to Congress, reserved powers are powers that are not stated or reasonably implied for Congress so they belong to the states, and concurrent powers are powers that both the federal and state government hold.
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What does the natural world include
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<h2>The natural world includes the following elements: </h2>

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The United States and Argentina have signed the Convention on Contracts for the International Sale of Goods (CISG). Oxtron, Inc.
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Answer:

The correct answer is A: The CISG

Explanation:

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