identify the constitutional clause that is common to both Hammer v. Dagenhart (1918) and McCulloch v. Maryland (1819 ).

The tourism industry’s main job is to cater to customers who 1. travel for pleasure 2. seek the fanciest place to stay overnight 3. want an exquisite dining experience 4. desire to take part in a recreational activity.

The difference of sample means of two populations is 55.4, and the standard deviation of the difference of sample means is 28.1. which statement is true if we are testing the null hypothesis at the 95% confidence level? a. the difference of the two means is significant, so the null hypothesis must be rejected. b. the difference of the two means is significant, so the null hypothesis must be accepted. c. the difference of the two means is not significant, so the null hypothesis must be rejected. d. the difference of the two means is not significant, so the null hypothesis must be accepted.

Can someone explain the chechen conflict with russia in 1999?