Question

Which of the following techniques was developed to lay roads and was an important advancement in road construction in the 19th century?

• A. The method of using broken stones
• B. The method of applying hardened tar
• C. The method of using concrete bricks
• D. The method of using clay and soil in alternate layers

Answer 1

The correct option is A The method of using broken stones

In the 1840s, John Loudon McAdam devised a method of laying roads using broken stones. This created a hard surface which was an important advancement in road construction. Within another decade, bitumen-based binding was used to build roads like we have today in more modern times.