Answer:
lingua franca
Explanation:
Swahili in east africa and english in global commerce are examples of lingua franca.
A lingua franca which is also refer to as bridge language, common language or link language is a language which is adopted as a mode of communication between speakers or groups of people whose native language or dialet differs, and it is mostly a third language which is different from the speakers or groups native language.
A whole language which is a language widely spoken and recognize internationally by diverse people can be recognized as a lingua franca
People are directly given power
It primarily shows boundaries and landforms
Answer would be b. phanerozoic
Answer:
Aqueducts
First developed around 312 B.C., these engineering marvels used gravity to transport water along stone, lead and concrete pipelines and into city centers. Aqueducts liberated Roman cities from a reliance on nearby water supplies and proved priceless in promoting public health and sanitation.
Concrete
Many ancient Roman structures like the Pantheon, the Colosseum and the Roman Forum are still standing today thanks to the development of Roman cement and concrete. The Romans first began building with concrete over 2,100 years ago and used it throughout the Mediterranean basin in everything from aqueducts and buildings to bridges and monuments. Roman concrete was considerably weaker than its modern counterpart, but it has proved remarkably durable thanks to its unique recipe, which used slaked lime and a volcanic ash known as pozzolana to create a sticky paste. Combined with volcanic rocks called tuff, this ancient cement formed a concrete that could effectively endure chemical decay. Pozzolana helped Roman concrete set quickly even when submerged in seawater, enabling the construction of elaborate baths, piers and harbors.
