Quais inovações revolucionaram a vida humana no início do século XX?

hello,

your answer whould be d

seeing as no choices were provided, i'll do my best to answer it from knowledge.

job specialization promotes work ethic to the person doing the job. he/she may be strong in the arms and able to lift things, specializing him/her in a job where you lift and carry.

equal area projections

equal-area projection. a projection in which regions on the earth's surface that are of equal area are represented as equal.

to reform the distraught soviet union, the democratization of the communist party was promoted through party secretary mikhail gorbachev's policies of “perestroika” and “glasnost.” perestroika refers to the reconstruction of the political and economic system established by the communist party.