Copernicus, galileo, kepler, and newton all supported what?

In italy, the distance between milan in the north and palermo,sicily, in the south is about 550 miles. in the united states, the distance betweenboston, massachusetts, and savannah, georgia, is about 900 miles. do you think the american revolutionaries of 1776 in the 13 colonies faced some of the same challenges as the patriots who struggled for italian unity in the 1860s?  

What was new about the writing system developed by the phoenicians, and why was this important to the growth of knowledge and spread of ideas?

Both the nervous and endocrine systems send electrical and chemical signals for internal communication. select the best answer from the choices provided t f