HELP Why is trade important throughout history?

Trade caused drought and disease.

Trade was a basic method of securing goods and services.

Trade made poor people rich.

Trade allowed countries to dominate others.

What were the death camps? who was sent there?

At what age must a person begin receiving their roth 401(k) payments?

Donald is studying the eating habits of all students attending his school. he samples the population by dividing the students into groups by grade level and randomly selecting a proportionate number of students from each group. he then collects data from the sample. which type of sampling is used? select the correct answer below: systematic sampling convenience sampling stratified sampling cluster sampling