Acomplex network of glands that release tiny amounts of hormones into the bloodstream of humans and other vertebrate animals is the

An endorcrine system involves all the glands in the body that make hormone. These glands are thehypothalamus, pituitary gland, pineal  gland, thyroid and parathyroid gland, thymus, adrenals, pancreas ovaries/testes. They release hormone which act as chemical messenger to be carried through the blood stream into the target organ where its effect will manifest. In general endocrine system is ductless. This is regulated by feedback loop of hemeostasis.

The soviet union beat the us to the first successful launch, with the october 4, 1957, orbiting of sputnik 1, and later beat the us to have the first human in earth orbit, yuri gagarin, on april 12, 1961. the "race" peaked with the july 20, 1969, us landing of the first humans on the moon with apollo 11

Not only is it the purchase of about 40% of america, it also grounds to on-go our advancement as a civilization.