In the 1950s, when the vice president became increasingly more active in the executive branch, the senate began appointing as its president pro tempore.

The one that the senate began appointing as the president’s pro tempore is the oldest serving member in the majority party in which he or she has the role of serving as a presiding officer but for a temporary time.

b) race riots in several cities

1. it was caused by feudalism

2. charlemagne used christianity as a major cornerstone for his rule. cloisters were built all over the empire to act as centers for the (re)population of the vast european wilderness.

3. the europeans feared the next raid every time chetak

i'm not so sure about #6. but i hope i you with the first 3.