What is one way that city landscapes changed in the beginning of the twentieth century? a. the first skyscrapers were built. b. the first tenement apartments were built. c. the first structures using steel were built. d. the first transportation systems were built.

C.The first structures using steel were built.

Explanation:

The use of steel to build buildings began at the beginning of the 20th century, but became widespread after the Second World War, when this material became more available. Steel buildings have been widely accepted because they can develop structures much higher than with concrete, a situation highly valued in the large cities of the world where land is scarce. The development of steel buildings has had great innovation with the use of computers.

mohenjo-daro is located west of the indus river in larkana district

yes based on alexanders actions he deserved the title of "the great". his empire covered about 3,000 miles and he was able to establish the empire over a 13 year period of time. he was able to conquer many different places. he also defeated the persians. he conquered egypt and developed a city and named it after himself.