Since at least 1995 the majority of increases in u. s. real gdp are from

Since at least 1995 the majority of increases in United States real Gross domestic product (GDP) are from Productivity growth. Productivity growth is determined by measuring the rate of output per unit of input (comparing the amount of goods and services produced with the inputs which were used in the production).

muslims control the north africa during the period of 1500 up

to 1800. they made a barrier to prevent further european exploration from

entering the africa from the north. however, the dutch ware still able to move

toward the interior with having south africa as one of the routes leading to

the east for trading with asia.

answer/// product differentiation;