Which of the following groups was the most important in satisfying the need for labor during the late 1800s?

do you have a list of sources to choose from?

ww1 weapons: tank. tanks were used for the first time in the first world war at the battle of the somme. they were developed to cope with the conditions on the western front. the first tank was called 'little willie' and needed a crew of 3.

what is the question

he resisted soviet oppression by soviet