What two regions of the u. s and canada are similiar?

Heyi am new to are you all americans? ( just want to know , i don't mean any offence ) ?

The world wars of the twentieth century immediately led to a. the establishment of a communist bloc in eastern europe b. the urbanization of europe’s societies c. an emphasis on humanism d. an emphasis on ties to greek and roman societies select the best answer from the choices provided. a b c d

Fossil fuels such as coal, oil, and natural gas were formed over millions of years by