What was the significance of george washington's crossing of the delaware river on december 25, 1776?

If you lived in greece in about 300b.c. you had a good chance of witnessing which of the following? select all that apply

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?  

Which of the following is/are a major technological advances of the mayan civilization? a. the calendar c. math b. architecture d. all of the above