What were three important events that occurred during Claudius reign?

During Claudius's reign from 41 to 54 AD, three significant events were the conquest of Britain in 43 AD, which marked the expansion of the Roman Empire; the construction of important infrastructure, including the Aqua Claudia aqueduct; and the political purges, including the execution of several senators and the controversial trial of his own wife, Messalina, for treason. These actions reflected Claudius's efforts to consolidate power and expand Rome's influence.