Answer:
Option: became tourist sites
Explanation:
The Olmecs originated their civilization in the thick jungle of Central America (Mexico). The Olmecs became the first to form pyramids in the region as the centre place for their God. They did not have much writing beyond some carved glyphs but were the first in the Mesoamerica to develop a writing system. They also invented the number zero which used in the Long Count calendar. In the present period, it became tourist sites because of its artifacts that have been found here. The Olmec best known for the statues they carved. These were stone heads about 20 ton.
The medical advancements came out of research occurring during WWI. The polio vaccination introduced in 1955, changed the outlook for children in America who may have been diagnosed with the disease. This innovation extended the life expectancy and made it more likely children would make it to adulthood. This increased the size of families as more children would live past childhood and not die from now preventable diseases.
The Green Revolution will emerge in the 1960s after the release of Rachel Carson's book Silent Spring. This book showed the damaging impact people had on the environment. Efforts would produce a return to more natural methods as well as recycling programs. In the 1970's, Nixon introduced Earth Day and created the EPA.
The space program was created as an extension to the arms race with the USSR. Rocket technology helped to create the NASA program which was a federal means of producing innovation for both war and space travel. This drive became an important part of the Cold War and the ability to show the USSR that the US was more advanced and more intelligent.
Answer:
They called him the people's president because more people were involved in the nominating and voting process, therefore, well, they liked him ;)
Explanation:
