In a letter to a colleague, Isaac Newton wrote, "If I have seen farther, it is by standing on the shoulders of giants." Which earlier work made Newton's scientific contributions possible?
A. The use of the microscope to study cells by Robert Hooke
B. The theory of planetary motion developed by Nicolaus Copernicus
C. The process for making stronger steel invented by Henry Bessemer
D. The research on population growth by Thomas Malthus

Explanation is in the file

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ngai (engai, enkai, mweai, mwiai) is the monolithic supreme god in the spirituality of the kamba and kikuyu of kenya.ngai is creator of the universe and all in it. the kikuyu worshiped ngai facing the mt. kirinyaga (mount kenya) while prayers and goat sacrificial rituals were performed under the sacred mugumo tree (a fig tree species). ngai often was referred to as "mwene nyaga" meaning (the owner of the mountain).

it means that maasai people think that mount kenya is something to be worshipped along with god.when cattle or children cause problems,maasai elders just warn them that children must mend their bad ways or their god might punish them.this serves as law and order tool to maintain peace among maasai tribe.the maasai are an indigenous ethnic group in africa of semi-nomadic people settled in kenya and northern tanzania. due to their distinct traditions, customs and dress and their residence near the many national game parks of east africa, the maasai are among the foremost african ethnic groups and are known internationally because of their links to the national parks and reserves.

traditional maasai people's lifestyle concentrates on their cattle which make up the primary source of food. amongst the maasai and several other african ethnic groups, the measure of a man's wealth is in terms of children and cattle. so the more the better.