(C) Explain ONE historical situation in the period 1750-1900, other than the one illustrated in the passage, in which states in Asia or
Africa adopted Western policies that affected traditional economic
structures.

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Some connecting rods have to lubricate the cylinder wall or piston pin. the answer is letter d. graphite coating can be a major  additive to many  coating  systems and things such as connecting rods.  it functions as a refractory, lubricant, thermal conductor, and electrical conductor for a machine or thing to enhance its work.