What was the major weakness of the article of confederation? A. The national government could not negotiate treaties
B. There was no way for new territories to become states
C. State government lost most of their political power
D. States could ignore laws passed by the Confederation Congress

i think it is a system for harvesting crops more easily

name two ways organisms join a population and two ways organisms leave a population. two ways organisms join a population are birth rate and immigration. two ways they leave are death rate and emigration.

explanation:

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.

according to my research (britannica and quizlet) the first settlements were along the huang river because it could give the crops more fertile soil that really it out. this was due to the yellow slit caused by floods of the river.