How did new ideas and innovation affect Western Europe and Russia starting in the 15th century?

What restrictions do you think should be placed on studies with animal participants? explain

Before tuberculosis was understood to be a communicable disease, and before the discovery of antibiotics to treat it, a major outbreak could kill or cripple a significant portion of a nation’s labor force. how would such an event affect the economy? illustrate the effect by dragging to shift either the aggregate demand curve or the long-run aggregate supply curve.

John lennon and paul mccartney belonged to this group