 Complete the following phrase:  One of the smallest ships to ever come to Pier 21, the former minesweeper arrived in 1948 packed with 347 refugees from the Baltic, triggering a controversy about their admittance to Canada which help shaped Canadas postwar refugee policies. The 1950s marked the peak years of immigration arrivals, many of which were Italian-Canadians. A large two-story addition was built onto the immigration annex building in the 1950s to handle the heavy traffic of postwar European immigration. The 