Why are random samples so hard to achieve in real life surveys? What kinds of biases creep into most random samples, even if pollsters are trying their best to generate a truly random sample? Are there any ways to correct them? What kinds of biases are surveyors most concerned with?

According to the document, why can't the pope and the catholic church in rome make decisions for england? use evidence.

During the era of european expansion, what was the biggest reason for spain’s push for exploration?

2points which option best completes the diagram? humanitarian aid as a tool of foreign policy the united states provides humanitarian aid to rebuild after an earthquake. the country supports u.s. interests. o a. more educated citizens are more likely to create a democratic government o b. the citizens and government have a positive attitude toward the united states. o c. more prosperous citizens have money to spend. o d. the country's government discovers a new natural resource.