What is this picture and what does it mean?

New communication technologies, improved transportation, and advanced military weapons made it possible for countries to speed up acquiring territory. rule large amounts of territory. fight off competition from opposing nations. expand their economies, which aided in conguest.

Why was washington a logical choice to be commander in chief of the continental army?

It has been reported that the dna of the elephant shark has barely changed over the last 420 million years. which statement explains why the elephant shark has not changed over time?