Which rivers are the longest and most important in Southwest Asia? Choose all answers that are correct. A. Irrawaddy
B. Ganges
C. Euphrates
D. Tigris

d. new methods of assembly are introduced.

explanation:

this allows for the goods to be made on a larger scale. not faster because now it is shown to be made better, hence the greater productivity in the question. it is calling for something new to be introduced.

the mediterranean sea

polar areas, such as antarctica or the south pole.