Which was not a weakness of the articles of confederation?

no national court system was established.
congress had no power to control trade.
national government was given too much power.
congress lacked the power to tax.

The answer is actually "No national court system was established", because there was a court system in place but it left to Congress the authority to create lower federal courts as needed, giving them too much power. So that would mean that, that was not a weakness because they had one so no problem there.

a historian researching the immigration policies of the early 1900s would expect a source written today,rather than in 1910 to :

( a ) be more interested in objective data and statistics.

the anterior pituitary gland produces the following hormones and releases them into the bloodstream: psychotropic hormone, which stimulates the adrenal glands to secrete steroid hormones, principally cortisol. growth hormone, which regulates growth, metabolism and body       hope i