What is the main difference between primary and secondary sources?

What is the area of the trapezoid shown ?

How did the mausoleum at halicarnassus transform society? 25 points pl i need

Based on the map, which statement best describes the neighborhood of washington heights? (2 points) washington heights is a gated community. people of many ethnicities live in washington heights. restrictive covenants prevent most people from living in washington heights. dominicans have gentrified washington heights. washington heights is a dominican enclave.