What makes land based empires relevant in today's society?

Ateam of scientists studied the sediment at the bottom of an ancient lake. they were able to determine the weather conditions of the indus valley in ancient times. they found that the entire area had suffered a drought after the monsoons declined. this drought lasted 200 years. because of the drought, there wasn’t enough food or water. the people of the indus valley were forced to leave their cities.

Concerns of the spanish treatment of what nation lead to the spanish american war

What happened as the result of a conflict between british troops and a colonial militia in massachusetts