Read this excerpt from the text. "the trial of a person charged with a federal crime, or a suit involving the infringement of a patent or a copyright, or one involving any other matter arising out of an act of congress is . . within the . . jurisdiction of the federal courts." in a patent case being heard for the first time, this is an example of?

A situation in which a patent case is being heard for the first time, it falls as an example of:

exclusive jurisdiction.

Explanation:

The reasons that sustain this answer are two. First, all patent cases heard for the first time are by law conceded exclusive jurisdiction because the parties have no events associated and require further investigation. Second, this is straight to federal court and federal courts have authority over state courts.

the answer is:  

he is voicing feelings shared by all humans regardless of race.

in paul laurence dunbar's poem "we wear the mask," he replicates the words mask and we to emphasize how people in general -not just black americans- hide their true feelings. he suggests the masks cover people's faces and eyes, which are the main parts that display their emotions. he also thinks people's pain conceal behind those masks, so that they cannot see reality and nobody is able to see one another's sorrow.

the answer should be d) he was one of those young thousands who greeted the war with a certain amount of relief, welcoming the liberation from webs of tangled emotion" since it is the best option because it shows his desire to free himself. 

hope this answer you! have a great day.