What type of dating scale is shown on each side of the figure?

None   they are   equally likely to occur on any plate boundary

The us is first  the  u.s. economy  remains the  largest in the world  in terms of nominal  gdp. however, the  u.s. economy  loses its spot as the number one  economy  to china when  measured  in terms of  gdp  based on ppp. in these terms, china's  gdp  is $23.19 trillion exceeds the  u.s. gdp  of $19.42 trillion

Ones bigger then than the other

The area of the indian subcontinent is 4.4 million km^2 whereas the usa is  9.8 million  km²