If george washington had become king of america our government might have become?

Which of the following descriptions is an example of the curtual diffusion

What do most climatologists see as a major cause of rising global temperatures? a. earth's closer proximity to the sun due to its gravitational pull b. greenhouse gases produced by burning fossil fuels c. rising ocean levels caused by melting polar ice sheets d. water pollution cause by industrial waste

Aclaim about history is most likely not valid if it has which of these characteristics?