Answer:
it might be c idk but i think that it's right
Explanation:
It took several years. Now, we don't know the exact number of years it took to find out what roman concrete was made of, but we do know it took several years. Hope I helped! :)
Answer:
Explanation:
The Aryans brought with them their own language, religious beliefs, and social system. They spoke an Indo-European language known as Sanskrit. ... The Aq,'ans developed a social system that has had a lasting impact on Indian culture.
The destruction of the Japanese cities of Hiroshima and Nagasaki by American atomic weapons in August 1945 began The arms race<span> between the United States and the Soviet Union.</span>
