Which of the following people created concrete, which is durable as stone and is used to build waterproof and permanent structures?
The Romans
The French
The Italians
The Spanish

All of the following regions are labeled correctly on the map above, except a. highlands – 1 b. semiarid – 2 c. polar ice cap – 4 d. subarctic – 5

In 1912, the imperial system that had ruled over china for thousands of years

Kublai khan honored his mongol heritage by: a)marring only one wife b)praying facing mecca five times a day c)slaughtering ten chinese officials every year d)building a large enclosed hunting ground at shangdu,his summer palace