They have continued to improve and are still used today.
Answer:
I still think its water
Explanation:
Well recently people are getting worried because of all the ice caps melting away. So more and more people are considering water as the most important resource on Earth.
Answer:
An era dedicated to activism for equal rights and treatment of African Americans in the United States. During this period, people rallied for social, legal, political and cultural changes to prohibit discrimination and end segregation.
The Organization of Petroleum Exporting Countries unites countries extracting petroleum and involved in the "Middle East," since this is where a large portion of the world's oil comes from.
Grammar schools are state secondary schools that select their pupils by means of an examination taken by children at age 11, known as the "11-plus".
There are only about 163 grammar schools in England, out of some 3,000 state secondaries, and a further 69 grammar schools in Northern Ireland.
Under the grammar school system, pupils who pass the exam can go to the local grammar, while those who do not go to the local "secondary modern school".
Grammar schools have existed since the 16th Century, but the modern grammar school concept dates back to the Education Act 1944. This made secondary education after the age of 14 free.
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