Read the Following Paragraphs and Answer the Questions After Each

Read the following paragraphs and answer the questions after each paragraph.
We lived in Puerto Rico until my brother was born in 1954. Soon after, because of economic pressures on our growing family, my father joined the United States Navy. He was assigned to duty on a ship in Brooklyn Yard-a place of cement and steel that was to be his home base in the states until his retirement more than twenty years later. He left the Island first, alone, going to New York City and tracking down his uncle who lived with his family across the Hudson River in Paterson, New Jersey. There my father found a tiny apartment in a huge tenement that had once housed Jewish families but was just being taken over and transformed by Puerto Ricans, overflowing from New York City. In 1955, he sent for us. My mother was only twenty years old, I was not quite three, and my brother was a toddler when we arrived in El Building, as the place had been christened by its newest residents.
-Judith Ortiz Cofer
-What is the main point of this paragraph?