How are the united states and canada cooperating to improve environmental conditions? describe two ways that these countries are working to prevent future issues.

Human beings spread all around the world over a period of millions of years. identify when humans arrived in different regions of the world. 200,000 years ago 100,000 years ago 40,000 years ago 30,000 years ago

Which options most accurately assess the impact of transportation improvements (e.g., railroads, canals, steamboats, transcontinental railroad) on the settlement of the west? ***(select all that apply.)*** a. they led to an increase in population density. b. they made it easier to travel long distances. c. they in establishing towns. d. they led to the development of the fur trade. e. they allowed for international travel.

How did the timing of the attacks on 9/11 affect how many people witnessed them? a. they happened at night, so no one knew until the next morning b. the attacks occurred during morning news programming c. the weather was bad on september 10th, so the attacks had been delayed d. the attacks were supposed to happen during the world series