Answer:
The answer is concrete
Explanation:
Ancient Roman concrete was a mixture of lime mortar, aggregate, pozzolana, water, and stones, and was stronger than previously-used concretes. The ancient builders placed these ingredients in wooden frames where they hardened and bonded to a facing of stones or (more frequently) bricks.
Answer:
an organization which consists of a number of parties or groups united in an alliance or league.
Explanation:
Answer: The "North Atlantic Treaty Organization" ( " NATO " ) .& SEATO.
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Answer:
Continent is the correct answer.
Explanation:
